Chris Rink

Hi @Olical we already have [some support for nREPL](https://basilisp.readthedocs.io/en/latest/cli.html#start-an-nrepl-session), so perhaps that support is already possible.

The functionality of `core.async` depends primarily on the channel primitive. The package [aiochan](https://github.com/zh217/aiochan) implements the channel primitive using Python's builtin async/await functionality. This would be a super rad enhancement.

Possibly store arities on function meta?