Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2021-11-23 09:38 8f681f12

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chore(data/complex): add a few simp lemmas (#10395)

Estimated changes

Modified src/data/complex/basic.lean

added theorem complex.abs_pow

added theorem complex.abs_zpow

Modified src/data/complex/exponential.lean

modified theorem complex.abs_cos_add_sin_mul_I

added theorem complex.abs_exp_of_real_mul_I