Initial tracing SPI implementation
Existing tests pass
Working tests for instrumentation

* Moved example SPI into project
Moved from explicit arguments to Java interfaces
Successfully tracing action invocation
Intermediate state of instrumentation

* Most of the basics in place
* Cannot figure out how to instrument body parser and action methods directly
* Tests not passing because validation checks are checking data I cannot emmit
* May need to resort to AOP to get at instrumentation points not available in PlayDefaultUpstreamHandler and friends.
Fixed build problems from master rebase
Finally making progress on getting events properly ordered

With robustness!
More progress on a Play tracing SPI
Much work on getting tracing/tests into shape

* Tracing more sane.  More bugs found in existing console tracing logic :-(
* Tests working better.  More tests needed.  Going to port over more
  test cases from console.
* Still need to test chunked inputs
More progress towards a basic stats tracer
Began work on a simple analyzer framework
More abstraction stuff
Everything wired up through bootstrap
Added some debugging printlns

* Progress begin made.  Need to deal with action start/end better
More debugging, and more progress
Fixed publishing event response
Added basic documentation to tracing SPI

Also removed some printlns
Cleaned up formatting
Only publish data if we have some requests