`groupBy {}.aggregate { keys }`#662

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Jolanrensen wants to merge 2 commits intomasterfrom

groupByAggregateKeys

Commits on Apr 6, 2024

more explicit explanation of what happens in between cell calls in the extension properties api in notebooks
Jolanrensen
committed

Commits on Apr 15, 2024

added proof-of-concept `keys` addition to `groupBy {}.aggregate {}` to provide access to the keys: AnyRow used to group the df by.
Jolanrensen
committed