Swrup

advanced search: - surname/first name search in surnames_aliases/first_names_aliases too - add search by aliases - add search by "other events" (all events) (surnames/first_names)_aliases are put in surname/first_name index. aliases have...

should fix #1464 TODO: import chronicle, or at least the index page

related to #1450 add backward compatibility for witness notes

import/export: clean up, add test

1

note that I added royal92.ged for tests but maybe we can use a smaller one

- split executable/library code for ged/gw import/export - clean up some global ref - add simple import/export test

add duration parsing

3

Hello, This PR based on this [draft](https://github.com/ocaml-community/ISO8601.ml/pull/18) adds duration parsing