Community
Quantum is developed in the open on GitHub.
Questions, bugs and ideas
Open an issue. For a bug, a minimal .q file that reproduces it — and what you expected instead — is the fastest way to a fix.
Contributing
CONTRIBUTING.md takes you from a fresh clone to a merged pull request: the development setup, how a tag is a parser plus an executor, and how the tests are organised. A change in behaviour comes with a rule in SPEC.md and a test that cites it.
Code of conduct
Everyone taking part agrees to the Code of Conduct.
Security
Please do not report a vulnerability in a public issue. The security policy says how to report one privately, and which versions receive fixes.
Keeping up
The blog has release news (with an RSS feed), and the changelog lists every change, version by version.