DualShock4 Support

Version 2.0.5 is up with a couple of important bugfixes regarding controllers. Some controllers would make the game work really slow and unresponsive in the main menu. This has been fixed.

Additionally, a bunch of new controllers are now auto-configured including Sony's DualShock4. I tested the USB version on Windows and Mac. If you test on Linux or have a controller which you had to set up manually, please let me know it the comments and I'll add support for those as well.