Replace one QID with a more specific one

[dpriskorn]

https://www.wikidata.org/wiki/Q65510721 has main subject muon but "muon g-2" is a better fit. As it is not undoing the whole batch of 800 items and redoing it partly is the only way to recategorize these items.
A command line flag with --replace qid-to-be-replaced --replacement new-qid would be nice

[dpriskorn]

One more example https://www.wikidata.org/wiki/Q108601075 from https://www.wikidata.org/wiki/Topic:Wgsavrqdzim7p12l

[dpriskorn]

One more reported by SCIdude here https://www.wikidata.org/wiki/Wikidata:Project_chat#26_million_articles_to_go...