Bizarre effects on Mobile Browsers

[dj0nes]

Game engine acts differently when merging - it allows double merge of 2 2 2 2 to 0 0 0 8.

Some 3D graphics issues. Backface culling seems to have strange effects.

[dj0nes]

Double merge happens only in Z direction, likely has to do with lack of debounce on pinch vs other gestures.

Speaking of which, the input lag kinda sucks compared to the keyboard version. Consider lowering the time threshold for recognizing touch gestures, while adding debounce.