feat: new feature for the user, not a new feature for build script
fix: bug fix for the user, not a fix to a build script
docs: changes to the documentation
style: formatting, missing semi colons, etc; no production code change
refactor: refactoring production code, eg. renaming a variable
test: adding missing tests, refactoring tests; no production code change
chore: updating grunt tasks etc; no production code change