feat(tactic/simp_result): tactics for simplifying the results of other tactics (#2356)
* feat(tactic/simp_result): tactics for simplifying the results of other tactics
* word
* better tests
* order of arguments
* Revert "order of arguments"
This reverts commit 38cfec6867459fcc4c5ef2d41f5313a5b0466c53.
* fix add_tactic_doc
* slightly robustify testing
* improve documentation
Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>