Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2022-11-20 21:05 c9514469

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feat(data/list/perm): add list.perm.{join,join_congr} (#17497)

Estimated changes

modified theorem list.perm.bind_left
added theorem list.perm.join
added theorem list.perm.join_congr