Documentation request re slots, compose, viewports, templates, parts etc. from Gitter

[jsobell]

Posting on behalf of

Alex Dresko @alexdresko

"Heads up for anyone wishing to making life easier for new devs -- Please document the relationship amongst: replaceable parts, templates, compose, viewports, named slots, and layouts. I've read about as much as I can find on each individual subject, but haven't found anything that really ties everything together. It's fairly confusing. At this point, I'm just going to dive in (commit first) and see what combination of features gets me what I need."

Good suggestion.