Added piece drawing method

Can now draw black, white, or sacrificed pieces with the drawPiece method.

Currently it is called with the selection box drawing function to show it working.
Removed useless stroke width

Remove stroke width setting from the drawPiece method, as it does nothing.
Make GameWindow methods private

Make all non-contructor methods of GameWindow private as the window state is managed internally.
Added multi-piece drawing

Added function to draw pieces based on color and coordinate. The expected way to use this function is to iterate over the pieces in the game to draw them on the board.
Unified spacing code

Removed constants from xSpacing and ySpacing and made all settings of the variable the same.
Removed redundant variable definition

Removed some repeated definitions of x/ySpacing and x/yGridMax.
Fixed piece size calculation

Fixed the calculation of the radius of the pieces so they are actually based on the window size.
Move dimensions out of methods

This is the completion of the move of the dimension variables out of the methods and into variables accessible to the entire class. This means each of the variables is now calculated once, rather than every draw pass.
Fixed margin size for small boards

Now calculates the margin size for smaller boards so that the pieces will entirely fit on the screen for all board sizes.

Changed maxX/Y to x/yMax to match naming convention.
GameWindow cleanups

Fixed style of the enums to all uppercase. Fixed some comments.
Move selection implemented

Now allows for the selection of a move by clicking on a coordinate on the board and then clicking on a different coordinate. Currently the second point is shown with a blue selection box, and there is no checking of validity of moves.

Added the initial processMove function that will actually send the move to the Fanorona game to be handled.
Don't change selection on non-coordinate clicks

Update click checks to not change the current selection (either through deselection or selection of a different spot) if a non-coordinate location is clicked within the window.
Function name refactor and comments

Changed drawIndicator to processCoordinate since the purpose of the function had changed over time. Added some todos to maybe get to if there is enough time later.