Allow replacers to uppercase/lowercase capturing groups

[stinodego]

My contributors do not always format their pull request titles appropriately, so I want to implement a replacer that always uppercases the first letter of the changelog entry. I tried this:

replacers:
  # Uppercase the first letter of each changelog entry
  - search: '/- ([a-z])/g'
    replace: '- \u$1'

The \u works for some regex replacers, like in VSCode. However, this does not seem to work. Is there a way I can achieve this? If not, consider this a feature request!

[jetersen]

JavaScript sees the \u as an Unicode rather than a regex replacement.

I can't find any NPM package that implements this behavior so either we have written something or simply accept this is not something that is supported in JavaScript 😅