* (bug 43964) Invalid value of "link" parameter in <gallery> no longer produces
a fatal error.
* (bug 44775) The username field is not pre-filled when creating an account.
+* (bug 45069) wfParseUrl() no longer produces a PHP notice if passed a "mailto:"
+ URL without address
+* (bug 45012) Creating an account by e-mail can no longer show a
+ "password mismatch" error.
+* (bug 44599) On Special:Version, HEADs for submodule checkouts (e.g. for
+ extensions) performed using Git 1.7.8+ should now appear.
=== API changes in 1.21 ===
* prop=revisions can now report the contentmodel and contentformat.