Is there any published process to join the working group? Are the meeting of the group open to non-members? Is there a process to submit ideas/code/other things to the group?
Hey! You can read more about workgroup membership on the SWWG page on Swift.org.
The meetings are currently only run among workgroup members, but if the demand is there we could look into involving the community in some way.
This section of the forums (Swift Website) is a great place to submit ideas or start discussions about Swift.org. If you want to contribute code to the website, you can check out the Swift.org website repository on GitHub.
And if you want to reach the workgroup privately, you can always message us here on the forums.
I hope this helps!