Stylistic set for sans-serif r in Noto Sans Mono #509

However, if the sans-serif r is no longer available, retaining it in a stylistic set seems like an issue that can be addressed; and folks like @luaraneda can then use the new 2020 era noto-build tools to 'freeze' such a feature into the default design if they can't configure their terminal/app to use OpenType features.

Originally posted by @davelab6 in #341

Would it be possible to get that stylistic set?

(Or does it already exist? I tried to find it, but didn't see anything.)