Setup sponsoring to Open Collective via GitHub sponsors

[gr2m]

See https://blog.opencollective.com/double-the-love/

I can take care of it. Any objections?

[paulmelnikow]

Good idea! I fixed a typo 🙃

[gr2m]

We are on the waitlist

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. We try to do our best, but nock is maintained by volunteers and there is only so much we can do at a time. Thank you for your contributions.

[mastermatt]

This is complete, right? https://opencollective.com/nock

[gr2m]

yes