Description and examples of the event scheduler

[jrwarwick]

Mycroft has an internal event scheduler mechanism, referred to in this forum discussion: https://community.mycroft.ai/t/running-background-processes-with-skills/2986/4?u=jrwarwick

Would benefit greatly from general introduction, "does-and-don'ts" for usage, some simple examples. For now, it looks like the auto-generated API doc has some useful info:
http://mycroft-core.readthedocs.io/en/stable/source/mycroft.html#mycroft.MycroftSkill.schedule_event
but the methods are spread out and descriptions are not detailed.
Also: allowable (and preferred) methods of persistent data and state between executions.

[KathyReid]

Thanks again for the issue @jrwarwick, I know nothing about the event scheduler, but I will ask around and get this updated.
Best, Kathy