Patch: Tuesday fixups

Hi folks,

Apparently, there are still bugs, who knew!

In this release, we fix the following:

• An error that would occur if you joined a board while players had an open request for a multi-creature attack

• A bug in physics that could cause an error on exit.

• Poor handling of a reasonably rare connection issue.

• A full crash when TaleSpire was given a malformed tsMod file.

We are already hard at work on the next set of fixes, so look out for those soon.

p.s. There may be a slight increase in start-up time due to the validation we've added to the files. We are going to look into speeding that back up in a coming release.