Log Message:
Update to 0.67

Upstream changes:
0.67: # 2013-11-20T08:40:52+0100
- Support fish shell. Thanks to @yenzie++
- `info` command now takes an optional module name and show information for it. \ 
Thanks to @trcjr++
- doc/bug fixes from @mmcclimon++, @mperry2++, and markstos++

0.66: # 2013-08-03T00:22:29+0200
- fix a bug the made download failed with curl program.

0.65: # 2013-08-01T07:19:03+0200
- exec command: error hadndling improvements. Thanks to @vsespb.
- install command: add "--clang" option. Thanks to @salva
- various bug fixes. thanks to @ironcamel and @gottreu