Updated Snap.svg to version 0.3.0
Removed deprecated and unnecessary "pygments" specifier from config.
Removed the old, now-broken pagination plugin that filters out only blog posts.

We're going to take a different approach to separating blog posts from games and projects for Jekyll 2.0.
Moved games and projects to separate collections
Fixed lack of markdown processing in games and project pages.
Removed now-unnecessary showcase-entry layout.
Changed absolute links in games page entries to relative links.
Fixed Hellbound's title. It's Hellbound, not TOJam9.
Explicitly specify the date for games and project entries in the YAML front matter, and sort by it in the game and project pages.

So that we don't implicitly rely on Jekyll's current sort-by-date order and date processing in the filename of collections.
Merge branch 'jekyll2.1'