Version bump

Version bump

Update the docs

Change behaviour of multiline footnotes and fix some bugs

Multiline footnotes used to produce wierd invalid CSS. They now produce a `<div>` with `footnote` as a class. That mean, that multiline footnotes aren't styled by user-agent style sheets anymore.

Bugfixes:
* Limit indentation to 4 spaces
* Fix code-block support

Other changes:
* Better variable naming
* standardjs coding-style

Version bump

Bump to a nicer version