Clearly Document Release and Milestone System for COSMOS

[code-geek]

Note

The original card was: Start using releases and milestones in according with GitHub and open source guidelines.

At this point, we have made a couple of nice releases using the github system, but I don't believe we have fully documented the process in CONTRIBUTING.md or any other relevant place. Both as an open source project and simply to maintain consistency between releases, we need to establish a clearcut process.

Use release v3.0.0 as a guide. https://github.com/NASA-IMPACT/COSMOS/releases

Original Card Details Below

Description

We want to work in a more standard way when it comes to releasing code versions. We will manage our versions in accordance to https://semver.org/. Each release will already have a set of features that are expected in it. When those features get merged in, we will create a new release with automatically generated, then human curated changelogs.

Implementation Considerations

• Don't think of this from scratch; just use what other open source projects use

Deliverable

• A working release system that the team abides by

Dependencies

No response