Information about using the library is located here.
In order to contribute, the developer should implement the feature on a different branch and run the tests locally, including a minimum of one test for the new feature implemented. Then a pull request should be made.
In order the run the tests, the user can open the unity project located in unity/PitayaExample (preference to Unity 2018.2) and open the tests window in Window > General > Test Runner.
The script release.py in the root folder can be used to see the current version of the library and used to create a new one as well, example: ./release.py check --unity --release-notes 'Fixed a bug', ./release.py new --unity 1.2.3.