RFC #0389 - Tracking for Dynamic tag names in glimmer templates

Champion: @chancancode

Ember.js Team:

glimmer-vm

• Implement native element helper

ember.js

• Implement element helper in "userland", using technique similar to existing polypill
• Switch to native implementation when it lands in glimmer-vm
• API docs

Learning Team:

• Mention it in the Guides Components > Customizing a Component's Element in guides-source along with strong recommendations around handling accessibility correctly
• add a note about this feature in the Accessibility topic in the Guides, as a thing that people should check for in their apps to make sure it's done right
• Write API docs entry that includes accessibility concerns
• Write a release blog post section which describes the features and notes about accessibility