Backfill Task.handle unit tests.
Add handleWith to Task.
implemented Task.runAsyncInterruptibly
fix zip

should not evaluate second parameter if first parameter is empty
override apply2, tuple2
add ZipTest
catchable for io/kleisli
Merge pull request #632 from Spinoco/task/interrupted

implemented Task.runAsyncInterruptibly
Merge branch 'scalaz-seven' into topic/handle-with

Conflicts:
	tests/src/test/scala/scalaz/concurrent/TaskTest.scala
Merge pull request #625 from xuwei-k/zipLazy

fix zip. should not evaluate second parameter if first parameter is empty
Merge pull request #592 from rossabaker/topic/handle-with

Add handleWith to Task.
add IsomorphismFoldable1, IsomorphismTraverse1, IsomorphismBifoldable

relax IsomorphismFoldable constraint
fix ==>>#merge bug

https://github.com/haskell/containers/blob/ghc-7.2.1-release/Data/Map.hs#L2147
bump Scala versions
Fix missing parens in README.md
Merge pull request #634 from densh/patch-1

Fix missing parens in README.md
Free instances
add FreeTest
Merge pull request #635 from xuwei-k/freeInstances

Free instances
Merge pull request #633 from tpolecat/catchable-instances

catchable for io/kleisli