usage:
first time installation: git submodule update --init --recursive
every time: make
details:
- start by looking at arith0d.drawio (using draw.io editor) and main.odin (using a programmers' text editor)
- if you want to roll your own, a sourdough starter is at: https://github.com/guitarvydas/0D
draw.io is at: https://app.diagrams.net