Well this is fun. It probably still needs a few tweaks, but by all means, play around.

Sono now has a variable MONO axis. Value of 1 = monospace (which is basically what the previous version of Sono was) and value of 0 = proportional. The proportional styles have a "SANS" attached to their name.

If you've used Sono in the past, this update won't mess with your layout but it might alter some glyphs. I reorganized some stylistic sets for the sake of ease of use.

Enjoy.