Diversity on [spoiler]/prog/[/spoiler]

We already enjoy one of the most neurodiverse communities on /prog/, but how can we encourage the participation of women and PoC?

My suggestions:

1. Adopt a ``Code of Conduct'' strongly discouraging oppressive behavior.
2. Reach out to other communities.
3. Implement a soft quota on participation by cisgender straight white males in any given thread (interested in discussing the technical implementation of it).

Any other ideas?