Touchscreen event handling
@kat
Submitted by Kat Link to original bug (#678272)
Description
Add touchscreen event handling.
At the moment, it is possible to single tap a tile to reveal it or single tap a revealed tile to reveal others around it when the mines are marked. It is not possible to mark a mine without a mouse.
I suggest that a double tap on a touchscreen is registered as adding a flag instead of as two individual taps. Another double tap should change the red flag to a blue flag when blue flags are enabled or remove the red flag when blue flags are disabled.
Version: git master