Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2020-12-23 16:10 fd9268cb

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feat(data/list/basic): lemmas about scanl (#5454)

Estimated changes

modified theorem list.length_scanl
added theorem list.length_singleton
added theorem list.nth_le_succ_scanl
added theorem list.nth_le_zero_scanl
added theorem list.nth_succ_scanl
added theorem list.nth_zero_scanl
added theorem list.scanl_cons
added theorem list.scanl_nil