Replaced Grunt and Make with Gulp.
Rebuilt helpers with coffee. Removed helpers/extend.
Moved coffee files from src/lib to src.
Rebuilt classes with coffee.
API change: rebuilt proto/stack as helpers/stacker based on helpers/accessor.
Removed deferred module, cause Promise is in es6-shim and will be in ES6.
Rebuilt root level libs with coffee.
Rebuilt proto/id, proto/uid, proto/loader with coffee.
API change: renamed Config#stack to Config#source.
Release 0.9.0