10.05
2	cleaned some code to support Authen::PluggableCaptcha::KeyManagerDB
3	documented debug args
4	removed erroneous call to __validate_key_extended , which was deprecated / removed in earlier versions
5	added parameter 'do_not_validate_key' to existing.   this will bypass key validation.
6
70.04
8	Bugfix to 0.03 release.
9		consolidated __init_base_captcha into init
10		removed redundant keymanager creations
11		renamed __init__errors to _init
12		removed keymanger::init_existed, consolidated into validate_publickey
13
14
150.03
16	Major restructuring , backwards incompatible ( though quick to fix , it should just be changing some flags )
17
18	sorry ;/
19
20	KeyGenerator and KeyValidator replaced by KeyManager , which consolidates all operations.  also has a hook for expire_key
21
22	all external hash mangling ( $obj->{'render'}->as_string ) now class methods ( $obj->render->as_string )
23
24	most instances of the keyword args 'render' and 'challenge' have been replaced with 'render_class' and 'challenge_class'
25
26
270.02
28	Added some support questions to the FAQ
29	Added discussion of DB wrapping and a generalized KeyManager
30	Fixed a 0/undef/defined/'' issue
31