prints a block, packing out around the y/x location
        with pixels up to cell width and cell height

def put_standard_block(self, y, x, val):
        """
        prints a block, packing out around the y/x location
        with pixels up to cell width and cell height
        """
        for j in range(0,self.cell_height):
            for i in range(0,self.cell_width):
                self.img.put(val, (x*self.cell_width+i, y*self.cell_height+j))