Update the contributing guidelines to mention Discussions etc. #371
Description
As the thinking about new community features becomes clearer, the contributing guidelines should be updated to become a welcoming entry point to the community.
Goal
The goal of this action is to address https://github.com/gonzalo-bulnes/simple_token_authentication/projects/1#card-52075174.
Opportunities
- CONTRIBUTING.md
- Issue template(s)
- Pull request template(s) (:bulb: there are some automation options there that I have never used)