added HttpUriBuilder interface to main.java.ratpack.http and DefaultHttpUriBuilder class to main.java.ratpack.http.internal.
included new test class in the http internal tests package.
made changes to meet code style guidelines
added functionality for params and added multiple tests
added name and url to contributers list
Link to versioned Rx Javadoc.
Remove add() methods from Registries.

Closes #352.
Upgrade to Rx 0.19
Implicitly consider the execution complete when there are no more segments and the last segment did not initiate an async operation.
Support for forking execution.

Closes #353.
Install a Ratpack aware computation scheduler when using Rx.

Closes #354.
Make ExecController.getNumThreads() return the right value.
Fix thread count handling.
Add some extra escaping support.
Support retrieving generically typed model items.
Bump lazybones-gradle version to 1.0.4
Add more test coverage for existing file compression behavior (#336)
Add Rx operator for parallelizing a stream by forking an execution for each emitted item.
Log deprecations.
Docs for RxRatpack.forkOnNext().
Enhance default file compression behavior, make compression minSize/whitelist/blacklist configurable (#336)