Cancel or un select a piece

[jkenlooper]

Sometimes a user may have clicked on the wrong piece and needs to be able to unselect it. The major use case is when that piece is part of a larger group and the player doesn't want to have karma points deducted.

It should use the same function as when the current selected piece is moved by another player. This function is found in the puzzle-pieces/src/puzzle-pieces.js onPieceUpdateWhileSelected .

The build process for puzzle-pieces.js is not the greatest and could be improved since the tools have been updated to support web components and such.