Add unionsWith to combine a list of hash maps#118

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ppetr wants to merge 2 commits intohaskell-unordered-containers:masterfrom

Commits on Jan 22, 2016

Add unionsWith to combine a list of hash maps
ppetr
committed

Commits on Feb 8, 2023

Fix a comment for `unionWith` in Data/HashMap/Base.hs - it should be 'maps', not 'sets'.

ppetr
and
konsumlamm
authored