Contributing rules

MUST NOT commit to the master branch.
MUST NOT merge locally into the master branch. MUST use Pull Request.
MUST NOT use "Squash and merge" or "Rebase and merge". MUST use merge commit.
SHOULD insert Emoji Prefix in git commit message.
If you make a fix that changes behavior (feature addition, bug fix, etc), you MUST add a test codes that fails before the fixes and succeeds after the fixes.

Git Commit Message Style

commit message format:

{emoji} Subject

Commit body...

Emoji Prefix SHOULD use Unicode code points (eg 🎨). SHOULD NOT use emoji code (eg :art:).

Emoji List

Inspired of Atom Contributing and Gitmoji.

🎨 - improving the format/structure of the code
✨ - introducing new features
💥 - introducing breaking changes
🐎 - improving performance
👽 - updating code due to external API changes
💩 - writing bad code that needs to be improved
🚨 - removing linter warnings
📝 - writing docs
🚀 - deploying stuff
🐛 - fixing a bug
🔥 - removing code or files
✅ - adding or updating tests
➕ - adding a dependency
⬆️ - upgrading dependencies
⬇️ - downgrading dependencies
➖ - removing a dependency
🏷️ - adding or updating types (TypeScript)
🔧 - changing configuration files
🙈 - adding or updating a .gitignore file
📄 - adding or updating license
🚚 - moving or renaming files