Bump crengine and add cre.setEmbeddedFonts()

[poire-z]

crengine: fix parsing of long decimal values in css and new Polish and French hyph dictionaries
cre.setEmbeddedFonts() to make this crengine feature available to koreader (having a go at koreader/crengine#76)

[Frenzie]

Feel free to merge once the tests pass.

[poire-z]

Any prefered option for the merge, among a simple click on "Merge pull request", and the popup listed "Create a merge commit", "Squash and merge" and "Rebase and merge" (asking, as this would be my first - btw, thanks!-, and I want to get it right :)

[Frenzie]

All of them are basically fine, but squash & merge and rebase & merge are preferable because they make for a nicer Git log. There's no official policy but what I've been doing recently is squash & merge unless there are a bunch of nicely individually tailored commits inside the PR, even if there's only one commit. That way you also get a reference to the PR #.