add screenshot method
ignore editor backup files
add RawImage wrapper
add color method to raw_image
add point_to_index method to raw_image
add color_at method to raw_image
add documentation
add rotated method to raw_image
change screenshot method in Device now returns a RawImage
change get_argb to argb
add argb_at method and fix doc
replace color* methods with pixel method
fix doc
add each_pixel method to raw image
fix doc
Merge branch 'encrypt94-feature/screenshot'