The tiles had not perfectly quadratic shapes, so they caused some bugs.
I also made a adjustment to the reverse movement check and
the recovery of the strafe move
when touching walls.
Main change is the fixed main menu
The other changes include newly added resources, like
the new ground tile and blobby animations/designs
I also experimented with the display size and camera
To adapt to the new Blobby design, the default tile size was changed
to 24x24
