v5.3.18

What's Changed

• extsearch: search YggTorrent on the origin loginmgr is configured with by @IvanShift in #3392
• cache: use offsetExists() and offsetSet() on SplObjectStorage by @IvanShift in #3391
• cache: remember a load per object, not per cache key by @IvanShift in #3393
• xmlrpc: fail a request whose answer was cut short by @IvanShift in #3390
• CSRF check: refuse Origin: null unless the Referer is ours by @IvanShift in #3389
• cache: refuse a file whose root is not the value asked for by @IvanShift in #3394
• Bump version to 5.3.18 by @xirvik in #3395

Full Changelog: v5.3.17...v5.3.18