Thanks for your interest in contributing to Popper.js!  
Please, make sure to fullfill the following conditions before submitting your Pull Request.  

### Make sure to

1. Don't include the result of `grunt dist` inside your commits;
2. Make sure the tests are passing, you can check it running `grunt test` with Google Chrome installed;
3. Add any relevant test to cover the code you have changed and/or added;