Amazing work! Thanks so much for sharing the code for this project!
Have you considered attaching a license to this project?
Legally, if you don't assign a license on GitHub, people are not allowed to do anything with your code, not even download and run it, see here, which I don't think is your intension.
You can use tools like choosealicense.com to look for a suitable license. Maybe you can use the permissive MIT license. I also know that Apache License 2.0 is very popular for research projects (e.g. it is used actively by the Dutch eScienceCenter)
If you picked your license, all you have to do is add a file called LICENSE (no extension) with the license text to your repo. GitHub also has a handy convenience function for this.
Keep up the great work!