Composite business.
Added some list elements.
Whitespace fixes.
Lorem ipsum that has videos and comments.
blah.
Simplify converter.
Simplify.
Rich captions for supplements and videos.
Fixed some regressions with broken elife configuratoin.
Import caption titles as rich paragraphs.
Fixes for Landes configuration.
Tweaking the test doc.
Only consider paragraphs which are direct childs of the caption.
Make videos work again. Include table in lorem_ipsum doc.
Ids ids ids.
Global approach for extracting figures

Also correct mapping of source ids, by using a lookup method on the
Lens.Article. Removed dependency to Substance Converter, expose the
methods directly.
Smarter citation business. Also with regards to source_id mapping.
Added Article Commentary.
Abstracts.
Fixed PLOS configuration.