Mapping more keys to move camera.
Hiding the cursor.
Moving camera without holding the button.
Making enum values more reasonable.
Nicer text formatting.
Cosmetic changes.
Displaying camera's selected mode.
Switching between modes.
Improved switching into the FirstPersonWalkingOnTheBoard mode.
Playing around with fullscreen modes.
Adding two more sizes.
Renaming Display to Display3d to free Display class.
[WIP] Managing many sizes.
Using displays instead of viewports.
Removing obsolete code.
Fixing the allignments.
Keeping displays arranged.
Adding some TODOs.