Rengo is now available

[teapoweredrobot]

So now we have Rengo are we soon in for Zen go and multicoloured go??!
I guess the latter might also need

Suggestion: add another set of stones with customisable color

Sometimes I enjoy playing one color go. To do this I have to use the customizable stones and set them to the same color. Every time I do this I lose the colors I normally play with. It’s not a big problem because I can save the color codes I prefer to play with, but I think adding another set would be a good idea if it is not too difficult to implement Alternatively, the arrow could return to the previously used colors (instead of simply black/white)