Implemented code highlighting the Jeckyll way
Changed Colorizing engine to Pygments

There are still some subtle bugs, however
Implemented Colorizing with fenced code blocks

This colorizes during the Markdown parsing. Might fix #161
Implemented Highlighting for Markdown code

- Added fork of Markdowndeep as a submodule
- Made Pygments a singleton (kinda)
- Implemented Highlighting for markdown code blocks
Updated Markdowndeep dependency
Added Drafts functionality
Merge branch 'Drafts'
Changes to accomodate the drafts merge