Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2022-05-23 14:09 15e8bc48

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feat(topology/vector_bundle): define pretrivialization.symm (#14192)

  • Also adds some other useful lemmas about (pre)trivializations
  • This splits out the part of #8545 that is unrelated to pullbacks

Estimated changes