Custom Tachometers and Boost Gauges 3.1.0

This update focuses on fixing the apps not appearing after the 0.23 update.
I was in the middle of refactoring everything and so there are a lot of behind the scenes changes, but not yet any new apps (more is planned and will come at some point in the near future ).
The pointer dial on the tachometer app now highlights itself when the engine should shift up.