Make a ProxyResource which extends Resource, rather than injecting methods into Resource
Whoops, leftover include
move Sitemap into application, it's core to the entire system
Switch from ActiveSupports delegate method to Ruby 1.9+ def_delegator
Load templates from Git
Merge pull request #1286 from middleman/git_template

Load templates from Git
Pull mixin for extension activation into a real class
Convert renderers into first-class extensions
Data ext doesn't need to touch the app obj
Remove App include in File Watcher
get i18n's hands out of app too
Experiment with Contracts
more contracts