I also write Z and z with a stroke. And then someone on Twitter suggested we should add it as an option. I don’t know why I didn’t think of it despite of writing it that way! It’s coming.
I saw this, and the comment below asking why there are different versions of e.g. 0 and 7. Saw the variant picker on your site, and I can't help but wonder:
Do you have any plans to add the different variants in as stylistic alternates (SALTn tables)? This is how FontFont encoded two styles of numbers and other various symbols into a single OpenType font. With FF Zwo I like some of the alternates but not others and this lets me choose.
They already are part of stylistic sets. So, for example, if you download a combination of 0 and 7 (regardless of which one), there are ss01-ss06 stylistic sets that encode other options in it.
The reason why we have a "font configurator" is because lot of terminals/IDEs/tools/OS, etc haven't got a full support for OpenType features. So we let users configure it as they like and it just works.
Oh that's good to know. Admittedly I didn't look too hard but I didn't see any indication that the salt tables were populated. Judging by the comments I may not be the only one.
Do you have any plans to add the different variants in as stylistic alternates (SALTn tables)? This is how FontFont encoded two styles of numbers and other various symbols into a single OpenType font. With FF Zwo I like some of the alternates but not others and this lets me choose.