First of all, thank you!
This project uses semantic-release to manage its releases, and therefore your commit messages must follow a strict commit message format.
You may choose to use npm run commit instead of git commit, and you'll be presented with an interactive session that will generate your commit message for you.
Make sure that your code changes pass the project TSLint rules. You can find out by running npm run lint. The task also runs on the Continuous Integration environment and will fail the build if it does not pass.