Single-Player with Multi-Select and optional Godmode

Multi-select will be enabled when tapping a card that has a "sibling" card of equal value in the same hand or face-up set. Swipe any selected card up to play all selected cards.
Swiping a single card that has no siblings will also play it without triggering the selection mode, the same as tapping it.
Also adds game-win detection that allows the user to start a new game.