Upgrade to 1.21

So, on another note... the "inline thread popup" plugin.

Firstly, it seems to always show the beginning first post of the thread, which is not overly useful, since anyone who ever looked at the thread once would already know it just by the title. Last post would be a little more useful, though nothing is really a replacement for just clicking on the thread.

Secondly, it seems to malfunction when the first post contains a link. See attachment.