OptionalrequestsThe watch's request keys this feature answers, by name, such as WEATHER_REQUEST. The app logs one warning for a request no listed feature answers, which is how a face that declares a feature's keys but never opted into it finds out.
OptionalconfigThe settings page is about to open, while the old settings are still the saved ones.
OptionalconfigThe settings page closed and its new settings are saved.
OptionalmessageA message arrived from the watch. Each key the face declares can be read by its number, whichever way the phone keyed it.
OptionalreadyPebbleKit JS is ready, and the settings request has gone out.
OptionalrefreshThe background refresh ticked. slow is true on the less frequent ticks, the ones meant for data that changes slowly, such as weather.
The moments in the app's life a feature can act on. Every hook is optional.