TEst de merge
Version: 1.0.17
Entry: mfontana (13/09/2014)
Canvas unificado.
New button class to play with mouse.
Version: 1.0.18
Entry: mfontana (27/09/2014)
	El motor consume energia.
Version: 1.0.20
		Entry: mfontana (02/10/2014)
	Fire descuenta energia en proporcion a lcañon seleccionado.
		Version: 1.0.19
		Entry: mfontana (01/10/2014)
	Clase Cannon
		Version: 1.0.18
		Entry: mfontana (27/09/2014)