ndb: add author query support (William Casarin)

plan: use a less efficient plan for author query plans (William Casarin)

test: add test for created_at query plan (William Casarin)

plan: add created_at query plan (William Casarin)

test: add testdata for a large contact filter (William Casarin)

profile: fix bug where profile does not update (William Casarin)

Merge remote-tracking branch 'github/master' (William Casarin)

fix build on macos and iOS (William Casarin)

pushed to nostrdb:refs/heads/master

http://git.jb55.com/nostrdb/commit/00244ac0070d60b1315446f50b36c4e3842d5734.html