Add pico-8 functions to allow "glitches" #256
Description
First of all, thank you for making this engine. I have been long looking for a pico-8 alternative that would allow for custom resolutions and pallets.
One of the big pico-8 pulls for me is being able to "glitch" the screen by copying bits of data from the memory buffer. I would love to see them it litecanvas. Those functions are: pset, pget, clip, memset, memcpy.
The memset, memcpy might not be able to be implemented the same way (depending on how canvas works on the backend), but even copying portions of screen (or buffer) would be great!