deprecate Each and Length
deprecate Index
Merge pull request #392 from larsrh/topic/deprecate-classes

Deprecate `Length`, `Each` and `Index`
Rename OnePlus to OneAnd, with the intention of introduction OneOr which uses (F[A] \/ A) instead of (F[A] Tuple2 A). Introduce OneOr data type. OneOr[F[_], A] ≅ F[A] \/ A
sbt 0.12.4
update README.md s/7.0.0/7.0.1
fix typo
More trampolining in IO
Merge branch 'scalaz-seven' of https://github.com/scalaz/scalaz into scalaz-seven

Conflicts:
	effect/src/main/scala/scalaz/effect/IO.scala
Merge pull request #412 from scalaz/topic/oneor-pull

Rename OnePlus to OneAnd, with the intention of introduction OneOr which...