Adopt and share the OpenStreetMap US Code of Conduct

[jessbeutler]

As an OpenStreetMap US Charter Project, you’ve agreed to adopt our Code of Conduct for your project. As part of this, you will need to:

• [ ] Share and review the Code of Conduct among the Advisory Board making sure everyone understands the terms and knows how to report issues.

• [ ] Add the link to our Code of Conduct to your website, github, OSM wiki, and/or other areas where contributors and users will interact with the project.

[mvexel]

asked on Slack that everyone review and acknowledge here or post any questions / concerns.

[mattmanley]

Acknowledging that I've read the policy. No questions or concerns.

[jake-low]

Completed, see https://github.com/maproulette/maproulette3/pull/2458 and https://github.com/maproulette/maproulette-backend/pull/1151.