Consider using Hoedown

[devinus]

I have revived Sundown into an improved library called Hoedown!

https://github.com/hoedown/hoedown

Here, I merged long languishing pull requests from Sundown, merged almost every improvement from Redcarpet, merged improvements from Rinku and Houdini, greatly improved and standardized the API, and fixed many potential bugs.

Full list of changes: hoedown/hoedown@vmg:master...master

Sundown had a rich collection of bindings and it would truly be a shame if we couldn't all benefit from a single library in the future.