Manifest: don't export AboutActivity
game: add TextView for currentPlayer, fade out text on local player

replaces former giant progressBar with something more useful and appealing
uses current player color
game: update current player view immediately to reflect state after rotate

previously newCurrentPlayer has not been called after screen rotate,
making game view not showing busy state on computer moves
server: artificially delay computer move, if too fast

make sure, a computer turn takes at least 1 sec, for players to
catch up
game: add threshold when first moving a stone. improves positioning on sensitive displays

on very sensitive screens, stones might be moved when only touching.
make sure, that initial moving requires some actual moving, don't act
so sensitive when just tapping.

should fix committing of stones on some devices
game: option for snapping to closeby valid positions

helps positioning on small screens, option to disable that
will only snap to position that is within 1 piece distance
micro optimizations: use 3 threads, use flat array for game field

speed up copying by using System.arraycopy
micro optimizations
ai: only use biggest 7 stones instead of 9 for building up turn pool

should increase ai speed with only minimal loss to quality
version 0.0.1_pre12