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Contributions are welcome, and are accepted via pull requests. Please review these guidelines before submitting any pull requests.


  • Please follow the PSR-2 Coding Standard, PHP-FIG Naming Conventions and the PSR-4 autoloading standard
  • Ensure that the current tests pass, and if you've added something new, add the tests where relevant.
  • Remember that we follow SemVer. If you are changing the behaviour, or the public api, you may need to update the docs.
  • Send a coherent commit history, making sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please squash them before submitting.
  • You may also need to rebase to avoid merge conflicts.

Running Tests

You will need an install of Composer before continuing.

First, install the dependencies:

$ composer install

Then run phpunit:

$ vendor/bin/phpunit --coverage-text

If the test suite passes on your local machine you should be good to go.

When you make a pull request, the tests will automatically be run again by Travis CI.

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