Warning: Calling bottle :unneeded is deprecated! There is no replacement.

Just got a warning from `brew outdated`:
```
Warning: Calling bottle :unneeded is deprecated! There is no replacement.
Please report this issue to the git-chglog/git-chglog tap (not Homebrew/brew or Homebrew/core):
  /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/git-chglog/homebrew-git-chglog/git-chglog.rb:9
```