Feature Request: Cast to groups

[GrahamP-P]

Love this node, thank you for creating it.

Firstly this is not an issue but a feature request. Apologies if this is inappropriate.

Would it be possible to cast to a group of Chromecasts/google homes? I have a 5 Chromecast Audios and 3 Google Homes & Minis and have created a group called "All Speakers" containing all my devices. Would it be possible to cast to a group rather than individual devices? My trigger currently links to multiple copies of the node, one for each device, and when triggered they all play the message out of sync at different times. If it was possible to cast to a group they would all play in sync, which would be awesome. I'm thinking of building an ESP8266 based door bell that uses this node to announce that "You have a visitor at the front door".

Many thanks, Graham.