Revert "Revert "REF: move shift logic from BlockManager to DataFrame""#42322

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simonjayhawkins wants to merge 1 commit intomasterfrom

revert-42317-revert-40536-ref-shift

Commits on Jun 30, 2021

Revert "Revert "REF: move shift logic from BlockManager to DataFrame (#40536)" (#42317)"
simonjayhawkins
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