`black latest` is not working

[amrox]

Describe the bug

Steps to reproduce

• Install this plugin for black
• note that latest version of black appears to be whitespace

❯ asdf install black latest
black  is already installed

[amrox]

Did some more digging. Currently all of black's versions are:

18.3a0
18.3a1
18.3a2
18.3a3
18.3a4
18.4a0
18.4a1
18.4a2
18.4a3
18.4a4
18.5b0
18.5b1
18.6b0
18.6b1
18.6b2
18.6b3
18.6b4
18.9b0
19.3b0
19.10b0
20.8b0
20.8b1
21.4b0
21.4b1
21.4b2
21.5b0
21.5b1
21.5b2
21.6b0
21.7b0
21.8b0
21.9b0
21.10b0

There isn't one without a a or b suffix. It looks like they're all being filtered out by this.

One option appears to be adding a latest-stable script to our plugin. However, I'm not sure this is the best option since I'm not sure we want to override version handling for all python apps. In turn, I'm not sure we want to put black-specific workarounds in our code either.

[amrox]

black released 21.1.0, so latest is now working! 🎉