Encapsulate window logic in new Window class.
Delegate window-specific methods to new Window class.
Rename @new_window to @window and move comments to Window class.
Remove uncalled methods from Set class, make increment methods private in Window.
Remove Window-specific methods from Set entirely.
Make use of attr_reader in Window.
Introduce new Point concept.
Delegate to new Point logic in Window where appropriate.
Change variable names in Window back to original.
Rename Point to Pixel.
Switch row/column method names, I think this makes conceptually more sense
Restructure draw, step 1
Remove each_pixel.
Remove need for @output and new_row.
Move character_for_iteration within mandelbrot call.
Condese map block.
Begin to encapsulate mandelbrot calculation in Mandelbrot class.
Replace Set mandelbrot calculation with Mandelbrot's calculation.
Remove duplicated methods.
Rename to calculate.