-+ Added HttpMessage::fromEnv(int type[, string class_name = "HttpMessage"]) (Clay Loveless)
-+ Added --enable-http-persistent-handles (Clay Loveless)
+* Fixed bug #10151 (build fails dynamic linking on Mac OS X)
+* Allow setting the "proxyhost" request option to an empty string,
+ which lets curl ignore any environment settings
+* Allow unsetting request options by passing NULL:
+ $request->setOptions(array("option" => NULL));