* Each tile can only merge once per move
* Game update correctly after just moving
* Slowed down animation because it looked weird out of the emulator
* Fixed a single typo
Looks weird for merging animation, it's because one of the tiles isn't refered as its origin by the merged one, so it won't appears.
* Solution 1: Make a Grid with previous tiles of which animation is based with nextPosition instead
* Solution 2: Make two previousPosition. It does what the original one does, however less stable (affects every new tile definition)
Geoffrey Frogeye