Update to 0.77

Upstream changes:
0.77 Fri Sep 19 23:13:20 UTC 2014
- Allow new USING usages.
- Updated the docs.

0.76 Tue Aug 19 16:43:41 PDT 2014
- Missed a TAB in previous release :\

0.75 Tue Aug 19 16:18:15 PDT 2014
- Replace tabs with spaces.

(wen)