Single repository workflow

Major version (eg: 3.0)

1. Create a new release milestone
2. Create a new <version> branch from the <latest-version> branch
3. Create a new ISSUE-<issue> branch from the <version> branch
4. Implement/fix issue
5. Create pull request from the ISSUE-<issue> branch to the <version> branch
6. Merge pull request
7. Repeat step 3-6 for more issues
8. Create release

Minor version (eg: 3.1)

1. Create a new release milestone
2. Create a new <version> branch from the <previous-version> branch
3. Create a new ISSUE-<issue> branch from the <version> branch
4. Implement/fix issue
5. Create pull request from the ISSUE-<issue> branch to the <version> branch
6. Merge pull request
7. Repeat step 3-6 for more issues
8. Create release

Patch version

1. Create a new release milestone
2. Create a new ISSUE-<issue> branch from the <version> branch
3. Implement/fix issue
4. Create pull request from the ISSUE-<issue> branch to the <version> branch
5. Merge pull request
6. Repeat step 2-5 for more issues
7. Create release