v0.16.5

• (bridge.commands) Added reason field for CommandEvent.redact.
• (client.api) Added reason field for the unban_user method (thanks to @maltee1 in #101).
• (bridge) Changed automatic DM portal creation to only apply when the invite event specifies "is_direct": true (thanks to @maltee1 in #102).
• (util.program) Changed Program to use create and set an event loop explicitly instead of using get_event_loop.
• (util.program) Added optional exit_code parameter to manual_stop.
• (util.manhole) Removed usage of loop parameters to fix Python 3.10 compatibility.
• (appservice.api) Switched IntentAPI.batch_send method to use custom Event classes instead of the default ones (since some normal event fields aren't applicable when batch sending).