-* renamed ob_httpetaghandler to ob_etaghandler
-* http_chunked_decode() now silently passes through apparently not encoded data
-* added HttpMessage class and HttpException (PHP5 only)
-* added http.cache_log INI directive
-* added throttling capability to http_send()/HttpResponse
-* added hooks for custom request methods
-* added PUT support
-* added http_match_request_header()
-* added clean_ob parameter to HttpResponse::send()