/cc @matsko @IgorMinar – These are the outstanding items based on our discussions the past few days:

• "//" (double-slash) syntax for overlays (plus good name – maybe reclaim "sibling" here somehow)

Behavior of rerouting during a navigation:

• before any components are committed, cancel and start over (recognition, canActivate, or loadResources/resolve) phases
• if any components are committed (any phases after load/resolve), then finish current nav before beginning the next

Databinding from parent component's outlet to child component

Allow user metadata in route configs

Examples (e2e tests)