Added mouse look
Improved mouse look. Now correctly applies the camera's matrix
Added scroll wheel zoom
Action speed is now applied to mouse look/zoom
Holding down a mouse button on a viewport and using WASD control now works. In perspective viewports, QE for rotation and ZX for up/down
Action scaling can now be changed by scrolling while holding a mouse button down on a viewport
Pressing W while holding mouse button down on a viewport will no longer cycle through wireframe modes
Resolves #34
Merge remote-tracking branch 'upstream/InDev' into InDev
It was possible to use WASD while not holding the mouse button down
Merge remote-tracking branch 'upstream/InDev' into InDev
Updater checker class  + UI
Update check is now done on startup. Resolves #26