Release v3.89.1

Fixed

• cratis screenplay conform-namespace exits with 4 (authentication_error) when Chronicle refuses to list observers for lack of authorization, like every other refused read; an expired cached login token is still refreshed once. (#414)
• Ctrl+C stops a long cratis screenplay conform-namespace scan between pages and exits with 8 (inconclusive), since nothing was compared. (#414)
• cratis screenplay conform-namespace attributes an event to a command only when its causation is a command. (#414)
• The conform-namespace reference states that Chronicle's metadata API still sends event source ids and subjects, and that the command drops them without writing them anywhere. (#414)