## Contributing 
  
  - With issues:
    - Use the search tool before opening a new issue.
    - Please provide source code and commit sha if you found a bug.
    - Review existing issues and provide feedback or react to them.
  
  - With pull requests:
    - Open your pull request against `master`
    - Your pull request should have no more than two commits, if not you should squash them.
    - It should pass all tests in the available continuous integrations systems such as TravisCI.
    - You should add/modify tests to cover your proposed code changes.
    - If your pull request contains a new feature, please document it on the README.