small bugfix

A small bug was reported with the square form ending up stuck in a rotated position after dying as a circle dashing into another circle from above in the Tutorial section. (Bug report and screenshot by Onedumbazz (thank you!))
I assume this was the result of a cheesy tactic I used to reset the player object's velocity, which includes freeing rotation for a very short amount of time.
The bug should be fixed now, I have tested it several times with and without the fix and updated the download with a newer version. (The name of the file is the same, but the file should be replaced with the bugfixed version!)