Github Worflow

Create a new branch from master
Develop on your branch. If your code has logic, also add appropriate tests for your logic
Run linting, tests and check code formatting etc before making a commit
Make sure you also keep merging master branch into your own branch, so that you keep getting other people's code changes as well, and this also would help avoid conflicts later.
Once developed, open a pull request to master. Assign people to review your pull request.
Work on feedback, if any on the pull request.
After successful approval through reviewers, your pull request would be merged to master

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