Retrograde plugin
An individual created a retrograde plugin 6 years ago for 1.0. It's too bad Musescore plugins can't work with JS anymore. Some of these old plugins have potential.
Hadley
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Comments
Note that altough it indeed had potential, it was also very limited in what it could do (no tuplets for example).
I have it somewhere on my pile of wish-list-things to improve upon; it's not at the top though...