Cleanup pass over Numeric.AD.Internal.Classes -- everything else is broken though
Further refined Numeric.AD.Internal.Classes
The start of a bigger refactoring to support Composition and AD -- still broken across the board, sorry!
Merge pull request #21 from barak/master

merge into dev branch
Make Lifted more monomorphic. Try to get things to compile.
Setting infix levels. This fixes #22
Relax some unnecessarily tight constraints
Merge branch 'dev' of https://github.com/alang9/ad

Conflicts:
	src/Numeric/AD/Internal/Classes.hs
GHC 7.4 at least doesn't have InstanceSigs. What version introduced it?
Removed prophylactic parentheses
InstanceSigs not necessary. Also towerPlus can be inlined without any problem