Remove Alt instances for Either
Removing extra function wrapper for goEff
Merge pull request #11 from ethul/topic/goEff

Topic/go eff
Remove unused imports
Merge pull request #9 from purescript-contrib/no-alt

Remove Alt instances for Either
Add Extract/Comonad instances for Identity.
Merge pull request #13 from joneshf/master

Add Extract/Comonad instances for Identity.
Add Lazy instance for StateT
Merge pull request #14 from purescript-contrib/lazy

Add Lazy instance for StateT