Added ReactS.zoom{,U}
Params for `ReactS.callback{,T}` no longer curried.

Breaks backwards compatibility. Sorry.
Are there more than 3 instances of this in the wild anyway?
Added ReactS.callbackM
Tidy up ReactS.Fix{,T} and add explicit return types
Bump Scala 2.11.2 to 2.11.4.
README: Small doco update re state monads
StateT already has zoom. Didn't know that.
Removed unnecessary explicit typing from ReactS.Fix{,T}
Added ReactS.FixT.{apply,gets,mod}S
.gitignore vim n stuff
Added ReactEventI aliases with underlying node as <input>
Doc ReactEventI types.
HISTORY.md: Refactor
HISTORY.md: Refactor
Restoring backward compatibility for 0.5.2
Improved the {t,tt,T,TT} sbt aliases.
0.5.2 final
Version bump
Revert "Restoring backward compatibility for 0.5.2"

This reverts commit 20e80fd496116110b4a561fd142d3a53343b4740.
Changed ReactS.callback method signatures from (c)(a) to (a,c)