Quinstance 0.2.0

Mother of God, that was terrifying. I created a useless tag by mistake, then accidentally nuked the whole master branch on Github trying to fix it. Luckily a simple force push got things back in order. I hope.

In any event, support is finally here for the classic QuakeEd format, so if you use TrenchBroom, NetRadiant, or another such editor, you won't have to convert your maps by hand before sending them through Quinstance. Have fun, and do let me know if something's gone wrong!