* also including docs of RequestVals.matchAndExtractHost
and RequestVals.matchAndExtractHost
* and add Host.create factory methods
* add missing HttpRequest PATCH and OPTIONS
* change to val in matchAndExtractHost for
fail fast exception
- explicitly provide Unit values and place parens around tuple creation
- remove structural type usage in TestUtils
- fix Java double-casts
- use unused Java values by asserting their non-nullness
- work around inability to place case class in trait (scripted test)
The remaining warnings about using private types in public methods are
bogus as reported in https://issues.scala-lang.org/browse/SI-9490.
