* WebResponse::setcookie is much more featureful. Callers using PHP's
setcookie() or setrawcookie() should begin using this instead.
* New hook WebResponseSetCookie, called from WebResponse::setcookie().
+* New hook ResetSessionID, called when the session id is reset.
=== Bug fixes in 1.22 ===
* Disable Special:PasswordReset when $wgEnableEmail is false. Previously one