v0.1.4

Hopefully this update will resolve the crashes everyone has been reporting.

It turns out that when exporting from Godot, even seemingly inconsequential warnings such as "unused variables" (delta, body, area) can cause the game to crash when loading scenes, even if they do not crash when testing in the editor.  I find this quite surprising.  By going through and addressing each of these, I've managed to remove all of the crashes that I am aware of.

Thanks to the testers who discovered and reported bugs, your input has been very valuable.