0.0.0

Rust rewrite, multithreading (#1)

* init

* nice

* nice

* interesting

* validated chunk logic, created map abstraction, got thread logic working again

* wow rust is pretty fast

* really solid progress here. Working collapse on small scale. leads on multithreading

* really solid progress here. Working collapse on small scale. leads on multithreading

* unit tests for chunk

* nice

* rename slot -> cell

* tidy