tweak config.as processing
Apparently this bug (excludedPackages) has been fixed in gradle-scoverage:0.5-SNAPSHOT as of (about) 2014/12/04
tweak implicit classTag
type coercion
A type-safe conversion for config/RichConfig.

Formerly the config.as[T] was done via reflection.  Now it is done via type-matching of implicit converter classes.  Cool.
This also makes it extensible, as you can create your own implicit conversion instance/method.
The only "losses" (feature-wise) are automatic conversion to a case class, and Array[X] (which, like, who cares anyway).