[ANN] Fourmolu 0.20.0.0 released

Fourmolu is a Haskell formatter. 0.20 comes with a couple fixes + new options, plus support for GHC 9.14. It’s also the first version to be installable with ghcup!

ghcup config add-release-channel 3rdparty
ghcup install fourmolu latest
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FreeBSD users can use the following trick to install linux binaries, since there are no native ones:

ghcup -p x86_64-fedora44-linux install fourmolu latest
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