Add custom draw/update function to avoid overwriting default behavior

[wwwDayDream]

uare.lua

• Line: 172 if self.customUpdate then self.customUpdate(self, dt, mx, my, e) end
• Line: 230 if self.customDraw then self.customDraw(self) end

Optional alternative to customDraw

• Line: 230 if self.overlay then self.overlay(self) end