Must be one of the following:
- FEAT: A new feature
- FIX: A bug fix
- DOCS: Documentation only changes
- STYLE: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
- REFACTOR: A code change that neither fixes a bug or adds a feature
- PERF: A code change that improves performance
- TEST: Adding missing tests