catchable for io/kleisli
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
Allow disabling of Validation#flatMap deprecation warning by `import Validation.FlatMap._`.
effect.Resource instance for A <: java.io.Closeable
fixed checkGenTypeClasses, i think
Compile scalaz with -Yno-generic-signatures

Scalaz artifacts did not pass the ASM verifier. See SI-7932 for the
underlying issue.

Fixes #571
Merge pull request #638 from tpolecat/resource

effect.Resource for subtypes of java.io.Closeable
deprecate `EphemeralStream#head` and `#tail`

Those methods are unsafe. Since they are used for internal implementation,
they will become private after the deprecation cycle.
IList.fill test
optimize IList.fill
Merge pull request #637 from S11001001/topic/validation-flatmap-optdeprecate

Allow disabling of Validation#flatMap deprecation warning
Unapply.AuxA, idea borrowed from shapeless.
Add onF to Leibniz/Liskov, onCov/onContra to Leibniz.
Leibniz#apply