Symbol packing updates!

Full Changelog: v3.1...v4.0

benchmark driven development

Hi there,

ive modernized the codebase and switched to c++, some parts see 10x speed increases.

Happy Hacking :)

mruby 3 Test fixes

This release only updates the tests to run on the latest mruby release.

mruby 3 release

v2.0

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