Support v1.4 new features about bootbot

[Ltty]

Do you already have a timeline for the updated API?

[Charca]

@tmwd I've just published v1.0.11 that should give you the ability to listen for the referral event with bot.on('referral', callback).

As for the generic "catch-all" handler for unknown events, I'd prefer to keep it controlled for now. I wouldn't like people to use this event for new features and never switching to the actual event when the framework adds support for it. Also this event wouldn't generate a Chat instance because we couldn't guarantee that there's a sender object in the payload.

If in the future Facebook starts adding events faster than we can keep up with, I can consider adding it, but for now I'd rather keep it under control. Thanks for the suggestion, though!

[Charca]

Hey @Ltty, thanks again for your contribution. Your PR takes care of all updates for the new Messenger Profile API, so after we merge that, we should be good to go!

The only new feature we need to support is the image_aspect_ratio prop in sendGenericTemplate() (docs). I can take care of that in a separate PR.

[temrysh]

What about referral param?
https://developers.facebook.com/docs/messenger-platform/referral-params
Maybe it could be handful to have an emitter for that?

[Charca]

@tmwd I've just added support for the referral event in df179c5

Once we merge @Ltty's PR we'll be able to close this issue.

[temrysh]

@Charca
Since there is no way to handle event if its not in the release, maybe it will be useful to have default handler for unknown events?

[Charca]

v1.0.12 released with full support for Messenger v1.4: https://github.com/Charca/bootbot/releases/tag/v1.0.12