Bugs 
====

* epub: no way to embed custom files to epub
* epub: toc.ncx currently only displays chapters (first level headers)
* latex: support for images is not good
* odt: no support for... a lot of stuff, actually
* config: can't parse specified numbers for negative chapter (is it
  really a bug?)

ToDo
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* generate cleaner codes (e.g. indentation)
* clean CSS and templates files
* html: add option to generate multi-pages html