Update 1.1.0

- Three new levels! Tangle, Safecracker and Hoist.
- Tweaked Pit level layout.
- Bug fix: Tutorials for keyboard could be displayed when a keyboard was not in use
- Bug fix: Undoing past atom collection let the player keep the atom in some circumstances.
- Bug fix: An open gate could momentarily be closed when placed down causing incorrect results with some receptor+gate+beam interactions.
- Bug fix: Player movement could appear stuttery when pushed from above.
- Bug fix: The line emanating from a receptor could appear in the wrong place if the receptor block is pushed.
- Bug fix: World map background didn't update until cursor was moved.
- Bug fix: It was possible to restart level or undo while menu is open.