Hey! First of all, thanks for making this. It's a godsend for working with bitmap fonts and adding life to text fields.
The one thing I'd like to see added are a paid of overflow options that TMPro has that I use from time to time but aren't available for SuperTextMesh.
The two are the ellipsis mode and the linked overflow mode. I use the linked overflow mode to create columns for text and it's really a handy feature for doing things like that. Though it is a bit of an edge case, I think it's a fairly simple solution to the problem of columns so it's a thing I'd like to use STM for instead of having to fallback on TMPro or more complex scripts.
Thanks again for making a superior alternative to Unity's pair of basically abandoned options and for your time.