this makes mentions faster

removed User.exists call since it is the same as calling User.getUidByUserSlug. This only calls slugify and User.getUidByUserSlug once.
Merge pull request #15 from barisusakli/patch-1

this makes mentions faster
more clever duplicate removal -- because clever code kicks ass
0.2.1
Add basic functionality for auto-completing mentions
Return an array instead, sort it, indent nicely
Use the new findUsersByName function
Don't notify yourself if you're mentioning yourself, that's silly.
Update upstream
Merge remote-tracking branch 'origin/master'

Conflicts:
	library.js