1* All generators
2- Handle drawing objects (convert to SVG images?)
3- Handle embedded fonts.
4- Handle embedded images.
5- Handle embedded documents.
6- Implement "best" splitting method.
7- Put footnotes into separate file(s).
8- Handle links.
9
10* Text generator
11- Implement text splitting based on chapters (requres explicitly marked headings
12  in the input).
13
14* Drawing generators
15- Handle master pages.
16- Sort objects for output by their position on the page. Currently they are
17  emitted in the same order they have been received, which, if the library is
18  used directly with one of the import libraries, can be completely random. This
19  implies handling of master pages and layers.
20- Make size-based splitting work.
21