Fix documentation of `select` to state that it selects the "last" hypothesis.

See merge request iris/stdpp!221

Various `omap` lemmas for finite maps; generalize `map_size_{insert,delete}`.

See merge request iris/stdpp!206

Robbert Krebbers authored 4 years ago and Ralf Jung committed 4 years ago

* Add lemma `map_omap_union`.
* Add lemmas `map_disjoint_fmap` and `map_disjoint_omap`.
* Add lemmas `fmap_merge` and `omap_merge`.
* Add lemma `omap_delete`.
* Generalize `omap_insert` and `omap_singleton` to cover both the `Some` and `None` case. Add `_Some` and `_None` versions of the lemmas for the specific cases.
* Generalize `map_size_insert` and `map_size_delete` in the same way.
* Add lemmas `lookup_fmap_Some`, `lookup_omap_Some`, and `lookup_omap_id_Some`.

Rename instance `finmap_lookup_total` → `map_lookup_total`.

See merge request iris/stdpp!220

add map_zip_diag and the lemmas required for that

See merge request !217

remove unused find_pat tactic

Closes #93

See merge request !219

add rename-by-pattern tactic

See merge request !218

Remove hint db and import of omega, since omega will be removed from Coq.

See merge request !216

fix and reject warnings on Coq 8.13

See merge request !214

add zip_with_diag and zip_diag

See merge request !215

See https://github.com/coq/coq/pull/13741#issuecomment-762761112

add set_map_union, set_map_singleton

See merge request !213

prove map_size_delete, map_size_insert_Some, map_to_list_delete

See merge request !208

Rename `seq_S_snoc` into `seq_S` to be consistent with Coq's stdlib

See merge request !212

upstream some list_numbers lemmas from Perennial

See merge request !211