mathlib

50cdb957 - fix(tactic/suggest): make `library_search` aware of definition of `ne` (#11742)

fix(tactic/suggest): make `library_search` aware of definition of `ne` (#11742) `library_search` wasn't including results like `¬ a = b` to solve goals like `a ≠ b` and vice-versa. Closes #3428