- <notes>* Fixed HttpResponse::setHeader("name", {omitted|NULL|""}) not unsetting header
-* Fixed HttpRequest::__construct()'s options parameter to allow NULL
-* Fixed build --without-http-curl-requests (bug #8872)
-* Fixed build with PHP < 4.3.10 (bug #9067)
+ <notes>+ Added "ipresolve" request option
++ Added HTTP_IPRESOLVE_{ANY|V4|V6}, HttpRequest::IPRESOLVE_{ANY|V4|V6} constants
+* Fixed crash when using non-associative arrays as request headers
+* Fixed crash when serializing incomplete HttpMessage objects