Fix test for responsive canvas height
Add click method to responsiveCanvas.
Add mousedown handler to the responsiveCanvas
add mouse up handler for the responsive canvas
Add mousemoved event to ReponsiveCanvas
Rename the responsive canvas events to all be past tense as Signals should be
Add addCell method to GameOfLife so we can start adding cells to the game
Add a new Rectangle class that knows how to draw itself to a graphics object
Allow cells to convert themselves to rectangles
Draw the grid last so cells dont appear on top of lines
start work translating mouse events into cell toggled
Have CellEvents mouseDown figure out which cell is getting clicked