mohiva/play-silhouette — pull request #58 by fernandoacorreia (2014-01-20 18:13:32+00:00)
Title: Consider enabling additional warnings

To ensure code quality, consider enabling additional warnings (if there are no false positives):

```
$ scalac -X |& grep warn
-Xfatal-warnings Fail the compilation if there are any warnings.
-Xlint Enable recommended additional warnings.
$ scalac -Y |& grep warn
-Yinline-warnings Emit inlining warnings. (Normally surpressed due to high volume)
-Ywarn-adapted-args Warn if an argument list is modified to match the receiver.
-Ywarn-all Enable all -Y warnings.
-Ywarn-dead-code Warn when dead code is identified.
-Ywarn-inaccessible Warn about inaccessible types in method signatures.
-Ywarn-nullary-override Warn when non-nullary overrides nullary, e.g. `def foo()` over `def foo`.
-Ywarn-nullary-unit Warn when nullary methods return Unit.
-Ywarn-numeric-widen Warn when numerics are widened.
-Ywarn-value-discard Warn when non-Unit expression results are unused.
```