fix-proselint

[FouMalade]

This PR fixes the problem with newer versions of Proselint by using the output of the --version command.

Fixes #5042

[Nytelife26]

Thank you for taking the time to update this. Following a conversation in amperser/proselint#1451, we were considering re-adding --version as an alias to proselint version for backwards compatibility, but I realise this breaks the fundamental assumption upon which your PR rests.

Since I am not familiar with ALE internals, I have some questions: How is this handled for other applications? Are there facilities for parsing the output of --version if we were to go ahead with putting it back? Would it be preferable to add a version key to the JSON output? Or is it ultimately easiest to just leave --version out at this point?

Update: I have a potential resolution to this. --output-format json did not exist prior to 0.16. Therefore, you can use proselint version --output-format json instead of proselint --version, and if that succeeds, you're on 0.16+.

[FouMalade]

I’m not familiar with ALE’s internals either, but the solution you propose using proselint version --output-format json instead of proselint --version works for me, and I can adapt to that.