Hello, dear developer
We will be happy to see your Pull Request!
Actually, we don't want to limit you, so just write clean & good code with tests and everything will be okay 
But, please first file an issue with feature request or bug report or contact us in existent one before contributing.
Also: GitHub issues are for feature requests and bug reports only, please ask usages question on StackOverflow.
Building project:
To build and test the project you need to execute:
# from root project directory
sh ci.sh