From Koha Wiki
The Koha-howto project has been created to guide you over the different steps of a patch submission.
You will learn how the Koha community is organised and which are the different steps of a patch before its integration.
You will be guided to apply a patch and sign it off inside a development environment, then you will write and submit your patch to our bug tracker, to share it with us.
Inside a KohaDevBox it can easily be setup.
Take a look at the README page of the project to know how to set it up.
The code is available on github at https://gitlab.com/koha-community/koha-howto
_____________ ______ As an aside.. THIS IS AWESOME, LEE! Congratulations!