1CHANGES
2-------
3
4  2.101 20 February 2021
5
6      * fix version numbers in meta files
7
8  2.100 7 January 2021
9
10      * bin/zipdetails version 2.02
11        7556eba2e174e77d8cdd914b27be1b63e0830d29 update to version 2.02
12        237e9e52f26b7de92398513aa79e8153e65184e6 more fixes for defalte bitmask
13        b03cddfa5c73984eb802fed1c7ad19f43b6522cc fix bitmask for deflate compression level
14
15      * trim whitespace
16        6f5af76d71de1f9d3d1af79dca2f945c318d4e82
17        878f24f8a2de69ccb6d99e6f62ac9eaa89818476
18
19      * some POD updates for zstd
20        1466d8ade3618a6779bd86e1feba81bbe1c6b7c6
21
22      * Fix warnings once in multiple locations
23        https://github.com/pmqs/IO-Compress/pull/27
24        fdf9958972ab34609c3dce33cb5014ca3a197e82
25
26      * Avoid duplicate use statements
27        https://github.com/pmqs/IO-Compress/pull/26
28        11b34f5738187c4bf73aafd243e317c0748553ce
29
30      * Avoid using indirect calls
31        https://github.com/pmqs/IO-Compress/pull/19
32        29a7c586f7adf9d029715d55de31382fd27e8ed3
33        d7a4f6e5af9f9b400f8f84cf38b4d74f4702b4e0
34
35  2.096 31 July 2020
36
37      * Add Zip support for Zstd
38        508258baeeec51ba49c3c07d2dda7c19e3194985
39
40      * Add support for Zip/Unzip with XZ compression
41        6d240d3b3514d627a751ec82fe71f2e236301e19
42        3c0046e8bc65ef467b9153722609654d3ccc5bbd
43
44  2.095 19 July 2020
45
46      * Add Support for Zstandard in AnyUncompress
47
48  2.094 13 July 2020
49
50      * bin/zipdetails version 2
51
52        7acb49ff4ca67051deaffd7f988556dae0dd884b small update
53        f5988eebc21a4d0b96e0b094e6e9bf8d3dcb1763 Better error messages for missing Zip64 records
54        d224dcc321dd1ff120345ac3a19286ecdc79776f Add note about warning output
55        4caa0e5117c4c214f457d90f9a87d00772a79622 Add --version option
56        6c045c859d2b6bab0398833f207d7f9b803bbbab Version 2
57        df97743ffa1da816936e8ef504c9d561d66bb0ed Beef up some error cases
58        073129c4f44ebd3cc2c5381ffa824fc09b474c29 Rename a couple of unused signatures
59        72568c7d9edfd3e2fb6647dce6ea511e9caa186c update comment
60        1088199809cabb9c565ac23f065988683aacd323 Merge branch 'master' of https://github.com/pmqs/IO-Compress
61        ad987ab95e3f3fa02fcf526736ad2da78d327460 Merge pull request #10 from fabiensanglard/master
62        ac76d1b3d3f23077b1700778226edd68c50d81a8 fix typo
63        5950d7e724479f0eceffe68ae515ac117ff6a5ef Don't output "Extra Payload" if length is zero
64        dbd3160decd9b761dbad7aaae2ec46c0173125ef Merge pull request #12 from fabiensanglard/extra
65        7ae4a98124c9195ca5286e3ac7d2cbe37fa2b644 Recover from bad extra subfield
66        3e12e62916da31c003a7273293bc32bb9a31f85f Fix typo
67        f3a0a4717433d32743f17d40adc30e11bea60868 Fix wrong START offset
68        6f078dca715473276556afb0b8582bb69efa7230 Typo for Implode string "Shannon-Fano Trees"
69        4e25fed1a8e29518fa38f0610a5ca33ca41e9d89 some small documentation updates.
70        1be04bf4bd5fb023ad276ecabdbc170823bac465 Add decoder for 'Open Packaging Growth Hint'
71        2da58735bdbd1149863014dd08a7cea0334f52d5 update compression method 16
72        82a9612676ae192747b8bcbf586b09408c3b72ce Add extra fields 0x20-0x23 from APPNOTE 6.3.5
73        bc5e2ffbc560b236bc3be0f977ce744f2a2afbfb remove trailing whitespace
74        3f70119190671b00eb432e36904aa9dbb2fb8f69 minor documentation changes
75
76  2.093 7 December 2019
77
78      * No changes
79
80  2.092 4 December 2019
81
82      * No changes
83
84  2.091 23 November 2019
85
86      * 000prereq.t: Drop LZMA Module as optional
87        00d3c110ce6fd6e77dbede3e3aa6125394141891
88        3697a7ced67d0989f2678514e9b04cbec3198f12
89        7494437856fb815ba2d6b8762ef6fc623a6384e2
90
91      * 011streamzip.t: Fixes for 5.6
92        2078eb58c5f483341ac7e5c6fc5d48a0a752c585
93        2f370b8ffb09b5cc5ad0830f9ef798b24a62f424
94        30101188220dddbfaf1c42a2a91b9bac147909ab
95
96  2.090 9 November 2019
97
98      * MANIFEST error for streamzip
99        https://github.com/pmqs/IO-Compress/issues/6
100        70dd9bb4d27bd23d47ac9392320f55c124bc347b
101
102  2.089 3 November 2019
103
104      * bin/streamzip
105        Add streamzip to EXE_FILES
106        https://github.com/pmqs/IO-Compress/issues/5
107        7f5ed78e5652125c9ba78aab720e18d384d59c00
108        fb8cd6480af6303f58fd2e12d4999cd1830f0c5f
109
110  2.088 31 October 2019
111
112      * t/105oneshot-zip-only.t
113        Fix reset of CompSize
114        6034da95f1dc5a594edc0d26e6add8d86990ad56
115
116      * Add Support Details
117        ad66b6ec4cf175a70e53f74572eed5f403648f11
118
119      * Update site for Bzip2 to sourceware
120        77497aeb2a234889a2b2c4ac7ea2f620895b16a9
121
122      * Fix number of tests
123        bc4e234449a82fb00f66af752dfc4c96097b2a4d
124
125      * Add streamzip script to bin
126        76d2795d0587bafb0cc398e97142740acba82a42
127
128      * zipdetails
129
130        * Update zipdetails to version 1.11
131         8958cb3aa90745a4b3369479846846fdca6b4f76
132
133        * Zip64 extra field typo
134          f186380d701fe5257f9fc92d69160dc6382cfc24
135
136      * t/105oneshot-zip-only.t
137        test with deflated directory
138        16bfffcf5089af67cb7f68685cc61d06409cba73
139
140      * t/105oneshot-zip-only.t
141        Add test for encrypted Zip files
142        5ad813115aed000f88d7df28261b43c00ae56525
143        2c64e255feb5a1ee33d033f7eccb6feca12ebe97
144
145      * Documentation Updates
146        https://github.com/pmqs/IO-Compress/issues/2
147        e1fd0d4eda0a8496981cbd83ad06906f4ae586a5
148
149      * Mention xz, lzma etc
150        https://github.com/pmqs/IO-Compress/issues/4
151        126f7b9da97b572d0fb89a9bdcc190c5405c72b8
152
153  2.087 10 August 2019
154
155      * IO::Uncompress::Unzip
156        nextStream not updating filehandle correctly
157        https://github.com/pmqs/IO-Compress/issues/3
158        25152f04f5b1bd9341502e42a5877c72eac3f291
159
160      * Added travis & appveyor files for CI in GitHub
161
162
163  2.086 31 March 2019
164
165      * IO::Compress::Zip & IO::Uncompress::Unzip
166        Added support for Language Encoding Flag via the EFS option.
167        Starting point was pull request https://github.com/pmqs/IO-Compress/pull/1
168
169      * zipdetails - some support for MVS (Z390) zip files
170
171      * IO::Uncompress::Base
172        Issue with trailing data after zip archive
173        #128626 for IO-Compress: mainframe zip archive
174
175      * t/cz-14gzopen.t
176        cperl error found in http://www.cpantesters.org/cpan/report/448cafc4-3108-11e9-9b6b-d3d33d7b1231
177        Perl has this: "Not enough arguments for Compress::Zlib::gzopen"
178        cperl uses this: "Not enough arguments for subroutine entry Compress::Zlib::gzopen"
179
180      * Handlers being called when optional modules are not installed
181        #128538:  $SIG{__DIE__}
182
183      *  #128194: Beef up diag when system returns error
184
185      * Moved source to github https://github.com/pmqs/IO-Compress
186
187      * Add META_MERGE to Makefile.PL
188
189      * Added meta-json.t & meta-yaml.t
190
191  2.084 5 January 2019
192
193      * IO::Uncompress::AnyUncompress.pm
194        Added support for IO::Uncompress::Zstd and IO::Uncompress::UnLzip
195
196  2.083 30 December 2018
197
198      * IO::Compress::*
199      * IO::Uncompress::*
200        The BinModeIn and BinModeOut options in are now no-ops.
201        ALL files will be read/written in binmode.
202
203      * IO::Uncompress::Unzip
204        Fixed issue with unziping a member from a streamed zip file.
205        Issue triggered by a libreoffice document.
206        Test added to 105oneshot-zip-only.t
207        Thanks to Fabrizio Pivari for the bug report.
208
209      * Added U64::isZero
210
211      * bin/zipdetails
212        Added 'Data Stream Alignment' (tag 0xa11e) to extra fields.
213        Field sourced from https://support.pkware.com/display/PKZIP/Proposed+ZIP+Format+Specification+Additions
214
215      * Compress::Zlib.pm
216        #125140: Tiny POD error in Compress::Zlib
217
218  2.081 4 April 2018
219
220      * previous release used $^W instead of use warnings. Fixed.
221
222  2.080 2 April 2018
223
224      * bin/zipdetails
225        #124003: zipdetails SYNOPSIS section got a typo: zipdetaile-> zipdetails
226
227      * IO::Uncompress::Base.pm
228        Changes for Archive::Zip::SimpleUnzip
229
230      * bin/zipdetails
231        Fix issues with zip64 archives.
232
233      * bin/zipdetails
234        Cope with zip archives where there is padding data after the compressed payload.
235        Example is Microsoft appx file.
236
237      * File::GlobMapper
238        #120580: File::GlobMapper::$VERSION needs increment; trailing whitespace
239
240      * t/cz-03zlib-v1.t
241        valgrind errors fixed in Compress::Raw::Zlib 2.0.75 for issue #121074
242        #121076: uninitialized errors from valgrind
243
244  2.074 19 Feb 2017
245
246      * Fix bad 2.073 release
247
248  2.073 18 Feb 2017
249
250      * #120239: [PATCH] ISA fixes for c3
251
252  2.072 12 Feb 2017
253
254      * Makefile.PL
255        #120084: Need Fix for Makefile.PL depending on . in @INC
256
257  2.070 28 Dec 2016
258
259      * File::GlobMapper
260        #117675: Fix prototype errors while lazy loading the module
261
262      * zipdetails
263        #116538: CVE-2016-1238: avoid loading optional modules from default .
264
265  2.069 26 Sept 2015
266
267      * IO::Compress::FAQ
268        - Added a section of bgzip
269          RT #103295: IO::Compress Feature request
270
271      * IO::Compress::Zip
272        - Zip64 needs to be first in extra field to workaround a Windows Explorer Bug
273          See http://www.info-zip.org/phpBB3/viewtopic.php?f=3&t=440 for details
274
275  2.068 23 Dec 2014
276
277      * Disable running of some of the slower test harnesses by default.
278        COMPRESS_ZLIB_RUN_MOST needs set to run them. Make life more
279        bearable on legacy platforms
280
281  2.067 8 Dec 2014
282
283      * RT #100257: IO::Compress::RawDeflate unnecessarily loads IO::Seekable
284
285  2.066 21 Sept 2014
286
287      * IO::Uncompress::Gzip
288        Documentation of ExtraFlags stated the XFL values for BEST_COMPRESSION
289        and BEST_SPEED use the values 2 & 4 respectively. They should
290        be 4 & 2. Code for setting XFL was correct.
291
292      * RT #95494: IO::Uncompress::Gunzip: Can no longer gunzip to in-memory
293        file handle
294
295  2.064 1 February 2014
296
297      * RT #90216: IO-Compress/t/050interop-gzip.t: Use android-compatible
298        flags when calling gzip
299
300  2.063 20 October 2013
301
302      * RT#89305: Typo in Compress::Zlib _combine function documentation
303
304  2.062 11 August 2013
305
306      * RT#87335: [PATCH] Fix up tests for imminent bleadperl changes
307
308      * RT#84647: typo fixes
309
310      * RT#86814: IO::Compress::Gzip test t/100generic-bzip2.t hangs on Cygwin
311
312  2.061 19 May 2013
313
314      * zipdetails (1.06)
315        Get it to cope with Android 'zipalign' non-standard extra fields.
316        These are used to make sure that a non-compressed member starts on
317        a 4 byte boundary.
318
319      * RT#84647: unzip example with IO::Uncompress::Unzip
320
321  2.060 7 January 2013
322
323      * Updated POD
324        RT# 82138: Example code not clear - gunzip() takes filenames!
325
326      * IO::Compress::Base
327        Remove the flush call when opening a filehandle.
328
329  2.059 10 December 2012
330
331      * IO::Compress::Base
332        Added "Encode" option.
333        Fixes the encoding half of RT# 42656. Decode is still TODO
334
335  2.058 12 November 2012
336
337      * RT# 81119: Latest IO::Compress 2.057 fails tests on 5.8.x
338
339  2.057 10 November 2012
340
341      * IO::Compress::Zip
342        Allow member name & Zip Comment to be "0"
343
344      * IO::Compress::Base::Common
345        Remove "-r" test - the file open will catch this.
346        RT# 80855: IO::Compress::Base::Common returns that it cannot read readable files in NFS
347
348      * RT# 79820: Install to 'site' instead of 'perl' when perl version is 5.11+
349
350      * General Performance improvements.
351
352  2.055 5 August 2012
353
354      * FAQ
355        Added a few paragraphs on how to deal with pbzip2 files
356        [RT# #77743: Interoperability problems with pbzip2]
357
358      * Compress::Zip
359        speed up compress, uncompress, memGzip & memGunzip.
360        [RT# #77350: Compress::Zlib::uncompress() is slowed down needlessly
361                     by parameter validation
362
363  2.052 29 April 2012
364
365      * IO::Compress::Zip
366        Force a ZIP64 archive when it contains >= 0xFFFF entries.
367
368      * Typos in POD
369        [RT# #76130: Gunzip Pod typo in OO section: $$output instead of $$input
370
371  2.049 18 February 2012
372
373      * IO::Compress::Zip
374        Error in t/cz-03zlib-v1.t that caused warnings with 5.15
375        [RT# 110736: warnings from cpan/IO-Compress/t/cz-03zlib-v1.t]
376
377  2.048 29 January 2012
378
379      * Set minimum zlib version to 1.2.0
380
381      * IO::Compress test suite fails with Compress::Raw::Zlib 2.047
382        and zlib < 1.2.4
383        [RT# 74503]
384
385  2.047 28 January 2012
386
387      * Set minimum Perl version to 5.6
388
389      * IO::Compress::Zip
390        - In one-shot zip, set the Text Flag if "-T" thinks the file is a
391          text file.
392        - In one-shot mode, wrote mod time & access time in wrong order
393          in the "UT" extended field.
394
395  2.046 18 December 2011
396
397      * Minor update to bin/zipdetails
398
399      * Typo in name of IO::Compress::FAQ.pod
400
401      * IO::Uncompress::Unzip
402        - Example for walking a zip file used eof to control the outer
403          loop. This is wrong.
404
405      * IO::Compress::Zip
406        - Change default for CanonicalName to false.
407          [RT# 72974]
408
409  2.045 3 December 2011
410
411      * Restructured IO::Compress::FAQ.pod
412
413  2.044 2 December 2011
414
415      * Moved FAQ.pod under the lib directory so it can get installed
416
417      * Added bin/zipdetails
418
419      * IO::Compress::Zip
420        - In one-shot mode enable Zip64 mode if the input file/buffer
421          >= 0xFFFFFFFF bytes.
422
423      * IO::Compress::FAQ
424        - Updates
425
426  2.043 20 November 2011
427
428      * IO::Compress::Base
429        - Fixed issue that with handling of Zip files with two (or more)
430          entries that were STORED. Symptom is the first is uncompressed
431          ok, but the next will terminate early if the size of the file is
432          greater than BlockSize.
433          Regression test added to t/006zip.t
434          [RT# 72548]
435
436  2.042 17 November 2011
437
438      * IO::Compress::Zip
439        - Added exUnixN option to allow creation of the "ux" extra field.
440          This allows 32-bit UID/GID to be stored.
441        - In one-shot mode use exUnixN rather than exUnix2 for the UID/GID.
442
443      * IO::Compress::Zlib::Extra::parseExtraField
444        - Fixed bad test for length of ID field
445          [RT# 72329 & #72505]
446
447  2.040 28 October 2011
448
449      * t/105oneshot-zip-only.t
450        - CanonicalName test failure on Windows
451          [RT# 68926]
452
453      * IO::Compress::Zip
454        - ExtAttr now populates MSDOS attributes
455
456  2.039 28 October 2011
457
458      * IO::Compress::Zip
459        - Added CanonicalName option.
460          Note this option is set to true by default.
461        - Added FilterName option
462
463      * IO::Unompress::Base
464        - Fixed issue where setting $\ would corrupt the uncompressed data.
465          Thanks to Steffen Goeldner for reporting the issue.
466
467      * t/050interop-*.t
468        - Handle case when external command contains a whitespace
469          RT #71335
470
471  2.037 22 June 2011
472
473      * IO::Uncompress
474        - get globmapper tests working on VMS
475          [RT# 68926]
476
477      * IO::Uncompress::Unzip
478        - Fixed limitation where Streamed Stored content was not supported.
479
480  2.036 18 June 2011
481
482      * IO::Compress::Zip & IO::Uncompress::Unzip
483        - Added support for LZMA (method 14) compression/uncompresion.
484
485      * IO::Compress::Unzip
486        - Fixed CRC issue when compression is Store or Bzip2 and Strict option
487          is set.
488
489      * IO::Compress::Zip
490        - Fixed Zip64 issue where the content size is exactly 0xFFFFFFFF
491
492  2.035 6 May 2011
493
494      * RT #67931: Test failure on Windows
495
496  2.034 2 May 2011
497
498      * Compress::Zlib
499        - Silence pod warnings.
500          [RT# 64876]
501
502        - Removed duplicate words in pod.
503
504      * IO::Compress::Base
505
506        - RT #56942: Testsuite fails when being run in parallel
507
508        - Reduce symbol import - patch from J. Nick Koston
509
510        - If the output buffer parameter passed to read has a value of
511          undef, and Append mode was specified when the file was opened,
512          and eof is reached, then the buffer paramer was left as undef.
513          This is different from when Append isn't specified - the buffer
514          parameter is set to an empty string.
515
516        - There are a couple of issues with reading a file that contains an
517          empty file that is compressed.
518          Create with -- touch /tmp/empty; gzip /tmp/empty.
519          Issue 1 - eof is not true immediately. Have to read from the file
520                    to trigger eof.
521          Issue 2 - readline incorrectly returns an empty string the first
522                    time it is called, and (correctly) undef thereafter.
523          [RT #67554]
524
525  2.033 11 Jan 2011
526
527      * Fixed typos & spelling errors.
528        [perl# 81816]
529
530  2.032 4 Jan 2011
531
532      * IO::Uncompress::Base
533        - An input file that had a valid header, and so would allow
534          creation of the uncompression object, but was then followed by
535          corrupt data would trigger an infinite loop when using the
536          input line oprator.
537          [RT #61915]
538
539      * IO::Compress::Gzip
540        - XFL default settings for max compression & fastest algorithm were
541          the wrong way around. Thanks to Andrey Zholos for spotting this.
542
543      * IO::Compress::Base::Common
544        - Fixed precedence problem in parameter parsing code.
545
546  2.030 22 July 2010
547
548      * IO::Compress::Zip
549        - Updates to documentation.
550        - Changes default value for ExtAttr on Unix to 0100644
551
552      * IO::Uncompress::Unzip
553        Reworked the "Name" option and examples in the pod.
554
555      * IO::Uncompress::Base
556        Fixed problem with nextStream not returning 0 when there is no
557        next stream and Transparent is false.
558
559  2.027 24 April 2010
560
561      * Compress::Zlib
562        Remove autoload code from Zlib.pm.
563        [perl #74088]
564
565  2.026 7 April 2010
566
567      * IO::Uncompress::Zip
568        - Some updates to IO::Compress::Zip documentation.
569        - Fixed default setting for ExtAttr.
570
571
572  2.025 27 March 2010
573
574      * IO::Uncompress::Unzip
575        The "Name" option wasn't documented.
576
577      * Allow zlib version check to be disabled by setting
578        TEST_SKIP_VERSION_CHECK environment variable.
579        [RT #54510]
580
581  2.024 7 January 2010
582
583      * Compress::Zlib
584        Get memGunzip & memGzip to set $gzerrno
585        [RT# 47283]
586
587      * Compress::Zlib
588        Export memGunzip, memGzip and zlib_version on demand
589        [RT# 52992]
590
591      * examples/io/anycat
592        This sample was using IO::Uncompress::AnyInflate. Much better to
593        use IO::Uncompress::AnyUncompress.
594
595  2.023 9 November 2009
596
597      * IO::Compress::AnyUncompress
598        Added support for lzma_alone & xz.
599
600  2.022 9 October 2009
601
602      * IO::Compress - Makefile.PL
603        Fix for core.
604
605  2.021 30 August 2009
606
607      * IO::Compress::Base.pm
608        - Less warnnings when reading from a closed filehandle.
609          [RT# 48350]
610        - Fixed minor typo in an error message.
611          [RT# 39719]
612
613      * Makefile.PL
614        The PREREQ_PM dependency on Scalar::Util got dropped when
615        IO-Compress was created in 2.017.
616        [RT# 47509]
617
618      * IO::Compress::Zip.pm
619        - Removed restriction that zip64 is only supported in streaming
620          mode.
621        - The "version made by" and "extract" fields in the zip64 end
622          central record were swapped.
623        - In the End Central Header record the "offset to the start of the
624          central directory" will now always be set to 0xFFFFFFFF when
625          zip64 is enabled.
626        - In the End Central Header record the "total entries in the
627          central directory" field will be set to 0xFFFF if zip64 is
628          enabled AND there are more than 0xFFFF entries present.
629
630      * IO::Uncompress::Unzip.pm
631        - Don't consume lots of memory when walking a zip file. This makes
632          life more bearable when dealing with zip64.
633
634      * Compress::Zlib.pm
635        - documented that memGunzip cannot cope with concatenated gzip data
636          streams.
637
638      * Changed test harness so that it can cope with PERL5OPT=-MCarp=verbose
639        [RT# 47225]
640
641      * IO::Compress::Gzip::Constants.pm
642        - GZIP_FEXTRA_MAX_SIZE was set to 0xFF. Should be 0xFFFF.  This
643          issue came up when attempting to unzip a file created by MS
644          Office 2007.
645
646  2.020 3 June 2009
647
648      * IO::Uncompress::Base.pm
649        - Fixed problem with LimitOutput where a call to uncompress
650          created more uncompressed output, but didn't consume any of
651          the input buffer. The symptom is the underlying compression
652          library (zlib or bzip2) thinks the input stream is corrupt.
653          [RT #46582]
654
655  2.019 4 May 2009
656
657      * IO::Uncompress::Adapter::Bunzip2
658        - Fixed problem with EOF check.
659
660  2.018 3 May 2009
661
662      * IO::Uncompress::Bunzip2
663        - The interface to Compress-Raw-Bzip2 now uses the new LimitOutput
664          feature. This will make all of the bzip2-related IO-Compress modules
665          less greedy in their memory consumption.
666
667      * IO::Compress::Zip
668        - Fixed exTime & exUnix2
669
670        - Fixed 'Use of uninitialized value in pack' warning when using
671          ZIP_CM_STORE.
672
673  2.017 30 March 2009
674
675      * Merged IO-Compress-Base, IO-Compress-Bzip2, IO-Compress-Zlib &
676        Compress-Zlib into IO-Compress.
677
678      * The interface to Compress-Raw-Zlib now uses the new LimitOutput
679        feature. This will make all of the zlib-related IO-Compress modules
680        less greedy in their memory consumption.
681
682      * Removed MAN3PODS from Makefile.PL
683
684      * A few changes to get the test harness to work on VMS courtesy of
685        Craig. A. Berry.
686
687      * IO::Compress::Base & IO::Uncompress::Base
688        Downgraded some croaks in the constructors to just set $! (by letting
689        the code attempt to open a file and fail).
690        This makes the behavior more consistent to a standard open.
691        [RT #42657]
692
693      * IO::Uncompress::Base
694        Doing a seek with MultiStream could drop some of the uncompressed
695        data. Fixed.
696
697      * IO::Compress::Zip
698        - Fixed problem with the uncompressed & uncompressed fields when
699          zip64 is enabled. They were set to 0x0000FFFF instead of
700          0xFFFFFFFF. Also the ZIP64 extra field was 4 bytes short.
701          Problem spotted by Dino Chiesa.
702
703      * IO::Uncompress::Unzip
704        - use POSIX::mktime instead of Time::Local::timelocal to convert
705          the zip DOS time field into Unix time.
706
707      * Compress::Zlib
708        - Documented Compress::Zlib::zlib_version()
709
710
711  2.015 3 September 2008
712
713      * Makefile.PL
714        Backout changes made in 2.014
715
716  2.014 2 September 2008
717
718      * Makefile.PL
719        Updated to check for indirect dependencies.
720
721  2.013 18 July 2008
722
723      * IO::Compress::Base
724        - Allow IO::Compress::Base::Parameters::parse to accept an
725          IO::Compress::Base::Parameters object.
726
727  2.012 15 July 2008
728
729      * IO::Compress::Base
730        - Silenced an uninitialised value warning when reading a line
731          at a time from a zip file where the content uses ZIP_CM_STORE.
732          [Problem spotted & fixed by Jeff Holt]
733
734      * IO::Compress::Base & IO::Uncompress::Base
735        - local-ise $!, $? et al in the DESTROY methods.
736
737  2.011 17 May 2008
738
739      * IO::Compress::Base
740        - Fixed problem that prevented the creation of a zip file that
741          contained more than one compression method.
742
743      * IO::Compress::Base::Common
744        - The private Validator class in this module clashes with another
745          CPAN module. Moved Validator into the IO::Compress::Base::Common
746          namespace.
747          [RT #35954]
748
749      * IO::Uncompress::Unzip
750        - Print an error message if the zip file contains a
751          member compressed with bzip2 and IO::Uncompress::Bunzip2 is
752          not available.
753        - Could not cope with mixed compression zip files. For example a
754          zip file that contains both STORED and DEFLATED content.
755          [RT #35573]
756
757  2.010 5 May 2008
758
759      * Fixed problem that meant Perl 5.10 could not upgrade this module.
760        [RT #35342 & 35341]
761
762  2.009 20 April 2008
763
764      * Removed the alpha status from File::GlobMapper
765
766      * IO::Compress::Base
767        When writing output never output a zero length buffer.
768        Done to improve interoperability with other tied filenandle
769        modules.
770
771      * Changed IO::Uncompress::Base to not use the offset parameter of
772        the read method when reading from a filehandle.
773
774        The object returned from Net::FTP::retr implements a non-standard
775        read method. The third parameter is used for a timeout value
776        rather than an offset.
777        [rt.cpan#33231]
778
779      * Changed IO::Uncompress::Base to not use the eof method when
780        reading from a filehandle.
781
782        The object returned from Net::FTP::retr implements both the read
783        method and the eof method. Unfortunately the implementation of
784        the read method uses non-buffered IO (by using sysread) while
785        the eof method uses buffered IO. Mixing buffered and non-buffered
786        IO results in data corruption.
787
788      * IO::Compress::Zip
789
790        - Added exUnix2 option to allow storing of UID & GID.
791        - When running on a Unix derivative the ExtAttr option now defaults
792          to the equivalent of 0666. For all other systems the default
793          remains 0.
794
795      * Compress::Zlib
796        - Minor documentation issue with flush.
797          [rt.cpan.org #31446]
798
799
800  2.008 2 November 2007
801
802      * Minor documentation changes in README
803
804      * t/compress/truncate.pl
805        EBCDIC Cleanup.
806
807      * IO::Compress::Gzip::Constants.pm
808        Tidied up the character classes used to defined invalid
809        FNAME & FCOMMENT fields for EBCDIC.
810
811      * Compress::Zlib
812        lib/Compress/Zlib.pm -- 1.x Backward Compatibility issues
813        gzclose - documented return value was wrong, should be 0 for ok.
814        gzflush - return value didn't match 1.x, should return 0 if ok.
815        [rt.cpan.org #29215] and Debian bug #440943 http://bugs.debian.org/440943
816
817  2.006 1 September 20007
818
819      * Makefile.PL
820        Added INSTALLDIRS directive to install as a core module when built
821        on a perl >= 5.9.
822
823      * IO::Uncompress::RawDeflate
824
825        - Fixed export problem - "$RawDeflateError" and "rawdeflate" were
826          not being exported with ":all".
827
828      * Compress::Zlib
829        - t/03zlib-v1.t
830          Fixed crc32 and adler32 tests in to remove ascii assumption.
831
832        - lib/Compress/Zlib.pm
833          Make gzreadline not support $/, just like in Compress::Zlib 1.x
834          Folk who want $/ with readline support can get it in
835          IO::Uncompress::Gunzip.  [rt.cpan.org #28663] and
836          Debian bug #435656 http://bugs.debian.org/435656
837
838
839  2.005 18 June 2007
840
841      * Stephen Turner reported a problem when using IO::Uncompress::Gunzip
842        with XML::Parser. Turns out there were two issues.
843
844        Firstly an IO::Uncompress object isn't an IO::Handle. It is now.
845
846        Secondly the implementation of "read" wasn't honouring this
847
848            SCALAR will be grown or shrunk to the length actually read.
849
850        In particular it didn't do the right thing on EOF.
851        This has been fixed.
852
853      * IO::Compress::Gzip & IO::Uncompress::Gunzip
854
855        - RFC1952 says that the FNAME & FCOMMENT header fields must be ISO
856          8859-1 (LATIN-1) characters. The code can optionally police this.
857          Added a fix for this logic when running on EBCDIC.
858
859      * Compress::Zlib
860        Added info about removing Compress::Zlib version 1, before
861        installing version 2.
862
863  2.004 3 March 2007
864
865      * Made seek less wasteful of memory.
866
867      * IO::Compress::Zip
868
869        - Added Zip64 documentation.
870
871        - Fixed extended timestamp.
872          Creation time isn't available in Unix so only store the
873          modification time and the last access time in the extended field.
874
875        - Fixed file mode.
876
877        - Added ExtAttr option to control the value of the "external file
878          attributes" field in the central directory.
879
880        - Added Unix2 extended attribute ("Ux").
881          This stores the UID & GID.
882
883      * IO::Compress::Gzip
884
885        - Fixed 050interop-gzip.t for Windows
886
887      * IO::Compress::Bzip2
888
889        - Fixed 050interop-bzip2.t for Windows
890
891      * Compress::Zlib
892
893        - rewrote memGzip using IO::Compress::Gzip::gzip
894
895  2.003 2 January 2007
896
897      * Added explicit version checking
898
899  2.002 29 December 2006
900
901      * Documentation updates.
902
903      * Added IO::Handle to the ISA test in isaFilehandle
904
905      * Add an explicit use_ok test for Scalar::Util in the test harness.
906        The error message reported by 01misc implied the problem was
907        somewhere else.
908        Also explicitly check that 'dualvar' is available.
909
910      * Compress::Zlib
911        - Fix append mode with gzopen.
912          rt-cpan.org 24041
913
914        - Allow gzopen to read from and write to a scalar reference.
915
916  2.001 1 November 2006
917
918      * Remove beta status.
919
920  2.000_14 26 October 2006
921
922      * IO::Uncompress::Base
923        Added support for $/ in record mode
924
925      * IO::Uncompress::Base
926        The readline interface was substantially slower than the 1.x
927        equivalent. This has now been sorted.
928        Thanks to Andreas J. Koenig for spotting the problem.
929
930      * IO::Uncompress::AnyUncompress
931        Added IO::Uncompress::Lzf to the list of supported uncompressors.
932
933      * IO::Uncompress::Base
934        Added TrailingData to one-shot interface.
935
936      * IO::Uncompress::AnyUncompress
937        Remove raw-deflate (RFC1951) from the default list of compressors
938        to check.
939        It can still be included if the new RawInflate parameter is
940        supplied.
941        This change was made because the only way to tell if content is
942        raw-deflate is to attempt to uncompress it - a few false positives
943        have popped up recently, which suggests that auto-detecting raw
944        deflate is far from perfect.
945        The equivalent change has been made to IO::Uncompress::AnyInflate.
946        [Core patch #28445]
947
948      * Don't check that filehandles are writable. It would seem that
949        "-w *STDOUT" on windows returns false.
950        [Core Patch #28415]
951
952      * IO::Uncompress::Deflate
953        Beefed up the magic signature check. Means less false positives
954        when auto-detecting the compression type.
955
956      * IO::Uncompress::UnZip
957        Tighten up the zip64 extra field processing to cope with the case
958        wheere only some of the local header fields are superseded.
959
960      * IO::Uncompress::AnyInflate
961        Remove raw-deflate (RFC 1951) from the default list of compressors
962        to check.
963        It can still be included if the new RawInflate parameter is
964        supplied.
965        This change was made because the only way to tell if content is
966        raw-deflate is to attempt to uncompress it - a few false positives
967        have popped up recently, which suggests that auto-detecting raw
968        deflate is far from perfect.
969        The equivalent change has been made to IO::Uncompress::AnyUncompress.
970        [Core patch #28445]
971
972  2.000_13 20 June 2006
973
974      * Store compress & uncompressed sizes as 64-bit.
975
976      * For one-shot uncompression, like this
977
978            unzip "some.zip" => \@a, MultiStream => 1;
979
980        Push each uncompressed stream from "some.zip" onto @a.
981
982      * Added IO::Compress::Base::FilterEnvelope
983
984      * Added IO::Uncompress::Base::nextStream
985
986      * The '-' filehandle now maps to either *STDIN or *STDOUT.
987        This keeps mod_perl happier. Was using these before
988
989            new IO::File("<-")
990            new IO::File(">-")
991
992      * Preliminary support for reading zip files with zip64 members.
993
994  2.000_12 3 May 2006
995
996      * Moved the code for creating and parsing the gzip extra field into
997        IO::Compress::Zlib::Extra.pm so that IO::Compress::Zip &
998        IO::Uncompress::Unzip can use it as well.
999
1000      * Added ExtraFieldLocal & ExtraFieldCentral options to IO::Compress::Zip.
1001        These allow the creation of user-defined extra fields in the local
1002        and central headers, just like the ExtraField option in
1003        IO::Compress::Gzip.
1004
1005      * Moved the zip constants into IO::Compress::Zip::Constants
1006
1007      * Added exTime option to IO::Compress::Zip.
1008        This allows creation of the extended timestamp extra field.
1009
1010      * Added Minimal option to IO::Compress::Zip.
1011        This disables the creation of all extended fields.
1012
1013      * Added TextFlag option to IO::Compress::Zip.
1014
1015      * Documented Comment and ZipComment options in IO::Compress::Zip.
1016
1017      * Compress::Zlib
1018        Fixed gzread to zap the output buffer to an empty string when zero
1019        bytes are requested. This matches the behaviour of C::Z 1.x
1020
1021  2.000_11 10 April 2006
1022
1023      * Transparent + InputLength made more robust where input data is not
1024        compressed.
1025
1026      * Updated Documentation for zip modules.
1027
1028      * Changed IO::Compress::Zip 'Store' option to 'Method' and added
1029        symbolic constants ZIP_CM_STORE, ZIP_CM_DEFLATE and ZIP_CM_BZIP2 to
1030        allow the compression method to be picked by the user.
1031
1032      * Added support to allow bzip2 compressed data to be written/read
1033        with IO::Compress::Zip and IO::Uncompress::Unzip.
1034
1035      * Beefed up 050interop-gzip.t to check that the external gzip command
1036        works as expected before starting the tests. This means that
1037        this test harness will just be skipped on problematic systems.
1038
1039      * Merged core patch 27565 from Steve Peters. This works around a
1040        problem with gzip on OpenBSD where it doesn't seem to like
1041        compressing files < 10 bytes long.
1042
1043      * Beefed up 050interop-bzip2.t to check that the external bzip2 command
1044        works as expected before starting the tests. This means that
1045        this test harness will just be skipped on problematic systems.
1046
1047  2.000_10 13 March 2006
1048
1049      * AnyUncompress doesn't assume  that IO-Compress-Zlib is installed any
1050        more.
1051
1052      * Documentation updates.
1053
1054      * Compress::Zlib
1055        Changed gzread so that its behaviour matches C::Z::gzread 1.x if it
1056        is called after eof. In this case it will write an empty string
1057        into the output parameter. This change is solely for backward
1058        compatibility reasons.
1059
1060  2.000_09 3 March 2006
1061
1062      * Released to CPAN.
1063
1064  2.000_08 2 March 2006
1065
1066      * Split IO::Compress::Base into its own distribution.
1067
1068      * Split IO::Compress::Bzip2 into its own distribution.
1069
1070      * Added opened, autoflush and input_line_number.
1071
1072      * Beefed up support for $.
1073
1074      * Split IO::Compress::Zlib into its own distribution.
1075
1076      * Beefed up support for zip/unzip
1077
1078      * Breakout zlib specific code into separate modules.
1079
1080      * Limited support for reading/writing zip files
1081
1082  2.000_06 5 October 2005
1083
1084      * Added eof parameter to Compress::Zlib::inflate method.
1085
1086      * Fixed issue with 64-bit
1087
1088  2.000_05 4 October 2005
1089
1090      * Renamed IO::* to IO::Compress::* & IO::Uncompress::*
1091
1092  2.000_04 23 September 2005
1093
1094      * Fixed some more non-portable test that were failing on VMS.
1095
1096      * fixed problem where error messages in the oneshot interface were
1097        getting lost.
1098
1099  2.000_03 12 September 2005
1100
1101      * Fixed some non-portable test that were failing on VMS.
1102
1103      * Fixed export of zlib constants from the IO::* classes
1104
1105  2.000_02 6 September 2005
1106
1107      * Split Append mode into Append and Merge
1108
1109      * Fixed typos in the documentation.
1110
1111      * Added pod/FAQ.pod
1112
1113      * Added libscan to Makefile.PL
1114
1115      * Added InputLength for IO::Gunzip et al
1116
1117  2.000_01 22 August 2005
1118
1119      * Fixed VERSION in Compress::Gzip::Constants
1120
1121      * Removed Compress::Gzip::Info from the distribution.
1122
1123  2.000_00 21 August 2005
1124
1125      * First Beta relase of Compress::zlib rewrite.
1126
1127Compress-Zlib version 1 Changes
1128
1129  1.38 - 6 September 2005
1130
1131      * Integrate core change 25304 -- Symbian Update
1132
1133      * Added libscan to Makefile.PL
1134
1135  1.37 - 12 August 2005
1136
1137      * Change to t/03examples.t for VMS from Abe Timmerman
1138
1139  1.36 - 3 August 2005
1140
1141      * Renamed zlib-src-1.2.3 to zlib-src to help VMS
1142
1143      * Fixed Makefile.PL for VMS
1144
1145      * Fixed t/03examples.t for VMS
1146
1147      * Added a couple of notes about incompatibility with Unix compress.
1148
1149  1.35 - 16 July 2005
1150
1151      * Updated zlib source to 1.2.3
1152
1153      * Fixed problem with where two calls to gzclose would hang the debugger.
1154        See https://rt.cpan.org/Ticket/Display.html?id=13789
1155
1156      * Added code from Alexey Tourbin to use XSLoader when available,
1157        and DynaLoader otherwise.
1158
1159      * Documented that the compress & uncompress functions were not
1160        the same as the Unix utilities of the same name.
1161
1162      * Fixed 05gzsetp -- it left a temp file hanging around.
1163
1164      * Integrate core change 24787 - SvUPGRADE returns void in blead
1165
1166      * Integrate core change 24788 - Makefile.PL adjustments for the core
1167
1168
1169  1.34 - 30 January 2005
1170
1171      * Fixed typo in the README
1172
1173      * Fixed examples.t on Win32 where paths have embedded whitespace.
1174
1175      * Fix for Cygwin and core integration from Jos I. Boumans
1176
1177      * Upgrade zlib source to 1.2.2
1178
1179  1.33 - 14 January 2004
1180
1181      * Reworked Makefile.PL to avoid creating a private copy of zlib.
1182        This both simplifies the build, plus it makes life easier for VMS.
1183
1184      * Patches for Makefile.PL to get it to work on VMS supplied by
1185        Craig A. Berry.
1186
1187      * memGunzip has very slow on FreeBSD. Turns out to be down to
1188        the way realloc works on FreeBSD. Changed both inflate & deflate
1189        to use exponentially increasing buffer sizes when they need to
1190        realloc. Thanks to Peter Jeremy for the lowdown on FreeBSD
1191        memory allocation.
1192
1193  1.32 - 26 November 2003
1194
1195      * Steve Hay reported a problem on rt.cpan.org with Windows and
1196        MSCV++ 6.0 where the source from the zlib directory was getting
1197        installed with the rest of the module.
1198        https://rt.cpan.org/Ticket/Display.html?id=1741
1199
1200        This has been fixed by renaming the "zlib" directory to "zlib-src"
1201        thus avoiding a conflict with the name of this Perl module.
1202
1203      * Fixed a bug in the inflate method where the input buffer is an
1204        lvalue (via substr). Problem & solution reported by Salvador Fandiqo.
1205
1206      * Tightened up the logic in Makefile.PL when BUILD_ZLIB is
1207        True. Issue spotted by Ralf S. Engelschall.
1208
1209  1.31 - 29 October 2003
1210
1211      * Reinstated the creation of .bak files - $^I seems to need a
1212        backup file on Windows. For OpenVMS, the extension _bak is used.
1213
1214  1.30 - 28 October 2003
1215
1216      * Bundled a sub-set of the zlib source with the module and changed
1217        the default make behaviour to build with the included zlib source.
1218        The previous behaviour of using a pre-built zlib library is
1219        still available for those that want it.
1220
1221      * Added prototypes to the subs in Zlib.pm that didn't already have
1222        them. Patch from Ed Avis.
1223
1224      * No .bak files are created by Makefile.PL any more - this keep
1225        distclean much happier. Patch suggested by Ed Avis.
1226        This also fixes a similar problem reported by Dr. Martin Zinser
1227        on OpenVMS.
1228
1229      * Documentation for some of the gz functions updated.
1230
1231      * Format strings modified in DispStream to keep OpenVMS happy.
1232        Problem reported by Dr. Martin Zinser.
1233
1234
1235  1.22 - 17 June 2003
1236
1237      * Makefile.PL now displays a warning about not installing
1238        Compress::Zlib via the CPAN shell.
1239
1240      * Fix to allow intermingling of gzread & gzreadline - patch
1241        supplied by Doug Perham.
1242
1243      * memGunzip will silently now work if the gzip trailer is
1244        missing. Some HTTP Origin Servers seem to leave it out.
1245
1246  1.21 - 28 April 2003
1247
1248      * Tests 148 & 150 from t/02zlib.t were failing on redhat 9.
1249
1250      * Added a few words about the problems with Mac OS X to the README file.
1251
1252  1.20 - 4 April 2003
1253
1254      * Fixed bug in gzopen where $gzerrno wasn't being set correctly.
1255        The symptom was $gzerrno was set to Z_MEM_ERROR although the file
1256	was opened ok. If gzopen failed, $gzerrno was being set correctly.
1257	This problem wasn't spotted before because the typical test
1258	to determine whether gzopen passed or failed was to check its
1259	return value.
1260
1261  1.19 - 31 October 2002
1262
1263      * fixed a problem with t/02zlib.t that was failing with redhat 8.
1264
1265  1.18 - 24 October 2002
1266
1267      * fixed a Win32 problem in t/02zlib.t by changing sysread to read.
1268
1269      * zlib 1.0.5 & older doesn't have gzsetparams & gzeof. Added a new
1270        variable to config.in to flag an old version of zlib. Split
1271        out the tests for gzsetparams into t/05gzsetp.t
1272
1273  1.17 - 23 May 2002
1274
1275      * Moved the test to check the versions of libz & zlib.h into a separate
1276        file and added troubleshooting notes to README.
1277
1278      * In gzopen, only attempt to call "tell" for normal files.
1279
1280      * Fixed to work in taint mode.
1281
1282      * Broke changes out of README into Changes file.
1283
1284      * Replaced internal use of Z_PARTIAL_FLUSH symbol with Z_SYNC_FLUSH.
1285        zlib.h says  /* will be removed, use Z_SYNC_FLUSH instead */
1286
1287  1.16 - 13 December 2001
1288
1289      * Fixed bug in Makefile.PL that stopped "perl Makefile.PL PREFIX=..."
1290        working.
1291
1292  1.15 - 4th December 2001
1293
1294      * Changes a few types to get the module to build on 64-bit Solaris
1295
1296      * Changed the up/downgrade logic to default to the older constructs, and
1297        to only call a downgrade if specifically requested. Some older versions
1298        of Perl were having problems with the in-place edit.
1299
1300      * added the new XS constant code.
1301
1302  1.14 - 27th August 2001
1303
1304      * Memory overwrite bug fixed in "inflate". Kudos to Rob Simons for
1305        reporting the bug and to Anton Berezin for fixing it for me.
1306
1307  1.13 - 31st June 2001
1308
1309      * Make sure config.in is consistent when released.
1310
1311  1.12 - 28th April 2001
1312
1313      * Modified Makefile.PL to only enable the warnings pragma if
1314        using perl 5.6.1 or better.
1315
1316  1.11 - 17th February 2001
1317
1318      * Added logic in Makefile.PL to toggle between using $^W and
1319        the warnings pragma in the module.
1320
1321      * The module, the examples & the test harness are now all strict
1322        & warnings clean.
1323
1324  1.10 - 5th February 2001
1325
1326      * fixed a bug in memGunzip. Used Z_ERR instead of Z_DATA_ERROR.
1327
1328  1.09 - 15th January 2001
1329
1330      * Silenced a few compiler warnings.
1331
1332      * Updated zlib home site in README & Zlib.pm to www.info-zip.org
1333
1334      * Minor typo in Zlib.pm - a link used AUTHORS instead of AUTHOR
1335        -- spotted by Frank Martini.
1336
1337      * Mention Archive::Zip
1338
1339      * added memGunzip. This is largely based on code provided by Jim Leonard.
1340
1341      * $deflate->flush can now take an optional parameter. Valid
1342        values are Z_NO_FLUSH, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, Z_FULL_FLUSH
1343        and Z_FINISH. The default is Z_FINISH.
1344
1345  1.08 - 6 Jan 2000
1346
1347      * uncompress was clobbering its input parameter. Now it doesn't.
1348        This bug was spotted by Deven T. Corzine.
1349
1350      * If a variable that only ever contained a number was given
1351        to compress or deflate, it would not be compressed properly. Now
1352        it will be coerced to a string and then compressed. This bug
1353        was spotted by Deven T. Corzine.
1354
1355  1.07 - 27 Nov 1999
1356
1357      * ANSI-ified the static functions in Zlib.xs
1358
1359      * Added the ability to build zlib along with the module.
1360        This feature is 90% based on a Makefile provided by Gurusamy
1361        Sarathy.
1362
1363  1.06 - 20 Sep 1999
1364
1365      * Fixed a nasty problem where inflate could truncate the data
1366        returned. Thanks to Douglas Thomson <dougt@mugc.cc.monash.edu.au>
1367        for both spotting the problem and fixing the bug.
1368
1369      * Added a note about the undocumented features in zlib that are
1370        required when accessing zip files.
1371
1372      * gzclose will now get called automatically when the gzip object is
1373        destroyed.
1374
1375  1.05 - 3 June 1999
1376
1377      * Previous release used newSVpvn, which doesn't exist in 5.004_04
1378        or earlier. Changed to use newSVpv instead.
1379
1380      * The module needs Perl 5.004 or better, so updated the version
1381        checking in Zlib.pm and Makefile.PL
1382
1383  1.04 - 27 May 1999
1384
1385      * Bug 19990527.001: compress(undef) core dumps -- Fixed.
1386
1387  1.03 - 17 Mar 1999
1388
1389      * Updated to use the new PL_ symbols.
1390        Means the module can be built with Perl 5.005_5*
1391
1392  1.02 - 31 Jan 1999
1393
1394      * The return codes for gzread, gzreadline and gzwrite were
1395        documented incorrectly as returning a status code.
1396
1397      * The test harness was missing a "gzclose". This caused problem
1398        showed up on an amiga. Thanks to Erik van Roode for reporting
1399        this one.
1400
1401      * Patched zlib.t for OS/2. Thanks to Ilya Zakharevich for the patch.
1402
1403  1.01 - 23 Nov 1997
1404
1405      * A number of fixes to the test suite and the example scripts to
1406	allow them to work under win32. All courtesy of Gurusamy
1407	Sarathy.
1408
1409  1.00 - 14 Nov 1997
1410
1411      * Fixed crc32 & adler32. They were very broken.
1412
1413      * The following functions can now take a scalar reference in
1414	place of a scalar for their buffer parameters:
1415
1416    	    compress
1417    	    uncompress
1418    	    deflate
1419    	    inflate
1420    	    crc32
1421    	    adler32
1422
1423	This should mean applications that make use of the module don't
1424	have to copy large buffers around.
1425
1426
1427      * Normally the inflate method consumes I<all> of the input buffer
1428	before returning. The exception to this is when inflate detects
1429	the end of the stream (Z_STREAM_END). In this case the input
1430	buffer need not be completely consumed. To allow processing of
1431	file formats that embed a deflation stream (e.g. zip, gzip),
1432	the inflate method now sets the buffer parameter to be what
1433	remains after inflation.
1434
1435	When the return status is Z_STREAM_END, it will be what remains
1436	of the buffer (if any) after deflation. When the status is Z_OK
1437	it will be an empty string.
1438
1439	This change means that the buffer parameter must be a lvalue.
1440
1441      * Fixed crc32 and adler32. They were both very broken.
1442
1443      * Added the Compress::Zlib::memGzip function.
1444
1445  0.5 - Confirmed that no changes were necessary for zlib 1.0.3, or 1.0.4.
1446
1447	The optional parameters for deflateInit and inflateInit can now
1448	be specified as an associative array in addition to a reference
1449	to an associative array. They can also accept the -Name
1450	syntax.
1451
1452	gzopen can now optionally take a reference to an open
1453	filehandle in place of a filename. In this case it will call
1454	gzdopen.
1455
1456	Added gzstream example script.
1457
1458  0.4 - Upgrade to support zlib 0.99
1459
1460	Added dictionary interface.
1461
1462	Fixed bug in gzreadline - previously it would keep returning
1463	the same buffer. This bug was reported by Helmut Jarausch
1464
1465	Removed dependency to zutil.h and so dropped support for
1466
1467	    DEF_MEM_LEVEL (use MAX_MEM_LEVEL instead)
1468	    DEF_WBITS     (use MAX_WBITS instead)
1469
1470  0.3 - Added prototype specification.
1471
1472  0.2 - Fixed a minor allocation problem in Zlib.xs
1473
1474  0.1 - first alpha release. 2nd October 1995
1475