Feature Request: Add support for handling browser forward/back buttons

[greenlaw]

I've noticed that the object-key hash-navigation only seems to work when the breadcrumbs are clicked or the user navigates to the page with a populated hash (e.g. initial load or browser refresh). If you're navigating through a key (directory) hierarchy, the browser back/forward buttons don't seem to have any effect, even though the location hash changes.

Looks like this could be implemented by adding a handler for the popstate event.

When I find some time hopefully I can create a PR for this, but wanted to document it before I forgot.

[lpalbou]

Yep, I confirm that would be helpful, many users still use that to go through different pages.