[BACKERS.txt] Add a missing last name

Issue #91
Be more intelligent about non-ascii identifiers when completing

Closes #87
improve error reporting for mismatched completion set
new code hint tests for ecma5 and browser
[vim plugin] fix project paths (refs/rename)
[vim plugin] Use os.path.join instead of string concatenation to build paths

Issue #90
[requirejs plugin] Make returned values shadow export objs

Closes #92