caves.app is now open source

I've reached the stage where I am now happy enough with the backend of the project to publish the source code. You can view a copy on on the GitHub repo.

If you come across any bugs, or wish to request any features, feel free to open an issue on GitHub - contributions are also welcome!

I'd just like to take a few moments to thank the people that are using the site - it's lovely to see that it is useful to cavers around the world.