More Ram

[jtothebell]

All Platforms
*Fix regression in horizontally flipped sspr calls
*updates to match Pico-8 0.2.4:
*Add support for extended user ram
*Add support for remapping sprite, screen, and map locations
*Add support for specifying map width
*Update z8lua to match Pico-8 changes to tostr, tonum, chr, ord, and sub

Platform Specific Fixes
*Fix race condition leading to intermittent freeze on exit on Bittboy platforms

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This discussion was created from the release More Ram.