[Master feature] Seamless page transitions

[ericlindley-g]

Users highly value page transitions that preserve as much context and happen as quickly as possible, but standard page navigations refresh the entire page (header bars, menus, etc disappear and reappear again), increasing actual and perceived loading time. App shell patterns (as with progressive web apps) address this opportunity—this feature is to provide a trivially-easy-to-implement way to get similar functionality with minimal effort.

Scope for Q4 2018 includes technical design

[ampprojectbot]

This issue doesn't have a category which makes it harder for us to keep track of it. @ericlindley-g Please add an appropriate category.

[ampprojectbot]

This issue hasn't been updated in awhile. @aghassemi Do you have any updates?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.