new_canvas(
config) ->canvas
Create a new pixel canvas for drawing and displaying images
Returns a canvas object with drawing and display methods.
fill, clear, pixel, line, circle, rect, blitsend, displayConfig fields:
width (default 800), height (default 600),colors.bg (RGBA background, default transparent {0,0,0,0}),colors.main (RGBA foreground, default near-white {252,252,252,255}).The canvas is pre-filled with colors.bg on creation.