Told you there were more bugs to fix. As of 30 July, Statickle no longer crashes on posts or pages with a bad modification date, and tags are sorted for a change. They're still kind of weird about case sensitivity; for now, simply avoid having two tags that differ only in letter case. And speaking of tags, I finally made it so that a post with no tags doesn't show an empty "Tags:" line anymore. That was a very silly mistake.
Amazing what a little stress-testing can reveal. And since I'm unlikely to do any more of that soon, might as well bump the version number to 1.0 beta. After all, Statickle already powers my personal blog, following a successful data migration yesterday.
It's alive! Aliiive! Ahem. You get the idea.