Process to merge Forks

[WaveHello]

Hello,

I'm working on an xBeach project and have been using your toolbox to pre and post process some of my xBeach models. It's been really helpful. I've been working on some non-hydrostatic models and have been in the process of adding some modules and documentation to the toolbox to facilitate what I need. What's the process for merging my changes into the main repo? I've done some preliminary testing to make sure I haven't broken anything in the process of adding what I need (Made sure the example problems are still producing the same results). I'm going to do some more testing. What other validation would you like to see?

Thanks for the work you guys did putting this together!

This is the link to my fork: https://github.com/WaveHello/xbeach-toolbox