Fix #68: JS optional arguments via Scala default arguments in interop
Merge pull request #132 from gzm0/default-args

Fix #68: JS optional arguments via Scala default arguments in interop
Implement java.util.concurrent.TimeUnit.

It is used by scala.util.concurrent.duration.Duration.
Merge pull request #134 from jonas/timeunit

Implement java.util.concurrent.TimeUnit.
Fix #135: Prevent bloated optimized size due to dropLZ method
Have Travis check the size of reversi outputs.

We can modify these numbers, but at least we won't have surprises.
Merge branch 'fix-code-growth-should-fail' (early part) into fix-code-growth-2.11