3.2.0-beta2

Netty 3.2.0 Beta Release

1. Implement New Routing system upon Sub pipeline switcher.
2. exception handler's Pipeline provided.
3. SimpleHttpExceptionHandler provided as a default exception handler for exception pipeline.
4. Content-Length Fixer handler for output httpResponse.
5. Exception Forwarder to help auto catch exception from user handlers into the parent router exception pipeline.
6. Exception throw when sub packages left after channel closed by some exception occasions.
7. Interface to define routing with some common routing config predefined.
8. HttpException class provided, with some common Http Errors predefined.
9. SimpleCycleRouter provide decoder support.
10. Testing Cases on HttpRouter, RouterUtil, RoutingPathMatcher, DefaultExceptionForwarder.