Widened dependency on containers.
Relaxed dependency on mtl.
Bump.
Merge commit 'ae452d8'

Conflicts:
	arrow-list.cabal
Fixed forgotten conflict.
Change operator type variables to normal text.

GHC 7.6 doesn't support operator type variables anymore :(
Bump.
Fix build with containers >= 0.5.2.0
Bump version
Merge remote-tracking branch 'origin/master'

Conflicts:
	arrow-list.cabal
	src/Control/Arrow/ArrowF.hs
	src/Control/Arrow/ArrowKleisli.hs
	src/Control/Arrow/ArrowList.hs
	src/Control/Arrow/List.hs
	src/Control/Monad/Sequence.hs