Polonium v0.3.0 - Shortcuts and QOL

I think that, as far as I personally am concerned, this script is more or less feature complete. This is the point where I am going to look into bug reports and feature requests from other people to get this script production ready. If you have any problem at all with this script, feel free to drop an issue.

Next update, I'm thinking of adding another tiling engine. I want to see if I can get the old Bismuth hamburger-looking tiling engine implemented, as well as maybe a 3 column engine.