Add MonadLogger instance for TreeT
Add concurrency to git-monitor, GHC 7.6.3 now required
Update author in .cabal files
Update to conduit 1.1

Pinging @snoyberg
Added vendor to .gitignore
Added Git/Tree/Working.hs
Add readIndex abstract function
Fix gitlib.cabal
Update git-monitor to use Git.Tree.Working
Convert from using failure to exceptions

Pinging @snoyberg @edwardk
Further fixes
Get lgReadIndex to compile
Further work on lgReadIndex