Use collections.
Use _docs and _importers collections.
Use GitHub Releases for release notes.
New copy for the 'Open-Source' header
Make sure this nag stuff all works
Write the "Ran into an Issue?" piece of Contributing.md
Update Git commands for the history file to use _docs
Write a How-To on importer writing.
Use Sass.
Merge pull request #157 from jekyll/new-site