correctly.
* (bug 45803) Whitespace within == Headline == syntax and within <hN> headings
is now non-significant and not preserved in the HTML output.
+* (bug 23343) Implemented ability to apply IP blocks to the contents of X-Forwarded-For headers
+ by adding a new configuration variable $wgApplyIpBlocksToXff (disabled by default).
=== Bug fixes in 1.21 ===
+* (bug 40617) Installer can now customize the logo in LocalSettings.php
* (bug 40353) SpecialDoubleRedirect should support interwiki redirects.
* (bug 40352) fixDoubleRedirects.php should support interwiki redirects.
* (bug 9237) SpecialBrokenRedirect should not list interwiki redirects.