Add multiple reaction support (Suhail Saqan)

Allow relay logs to be opened in dev mode even if relay is disconnected (Daniel D'Aquino' via patches)

fix: endless connection attempt loop after user removes relay (Bryan Montz)

ndb: sync up a few remaining NdbNote tag differences (William Casarin)

ndb: make NostrEvents immutable (William Casarin)

ndb: move to uint32 for kind and created_at (William Casarin)

ndb: move hexchar into header (William Casarin)

pushed to damus:refs/heads/master