React to `rsvp yes`

[WesleyAC]

Being able to react to a RSVPBot message with 👍 to rsvp yes could cut down on spam in RSVPBot threads.

[davidbalbert]

Ooh, this is a great idea! I don't know how hard it would be to implement. @timabbott does call_on_each_event support streaming reactji?

[timabbott]

Yep, call_on_each_event receives any changes that a Zulip browser does if you register for the right event types. In this case, you want the "reaction" event type.

[davidbalbert]

Great, thanks!

@WesleyAC this seems like this might take a day or two of work. I don't have a ton of time for this now, but I will try to set some aside in the next month or so. If you'd like to give it a shot in the mean time, please go for it! I am happy to help you around the codebase.