0.2.1.0

• Constraint abbreviations: Control.Ether.Abbr and Control.Ether.Implicit.Abbr.

0.2.0.0

• Convenience modules Control.Monad.Ether and Control.Monad.Ether.Implicit.
• Remove fmapN and deepN.
• Remove Control.Monad.Ether.Implicit.Except.TH.
• Add handle and handleT.

0.1.0.1

• Fix transformers lower bound.
• Remove unused language extensions.
• GHC 7.8 compatibility.