-+ Added HttpException::__toString() which takes care about any inner exceptions
-* Fixed issues with inheritance and cloning of HttpDeflateStream, HttpInflateStream and HttpMessage
- (Extending classes lose default properties on instantiation; Complex members ignored during cloning)
-* Fixed suppression of nested exceptions in e.g. HttpRequestPool::send() (fixes bug #8535)
-* Fixed crash on detaching requests from pool in request event callbacks