Maintain and expose router histories?

[mateothegreat]

@Anthelmed proposed potentially getting access to the route history on #65.

While this could be huge for some of us it does come with tradeoffs:

• Additional logic that cannot likely be tree-shaken during build optimization time.
• Who/what/when decides when to pop/drain/rest the history in the event it becomes to large or overrun?

Provide your feedback!

-Matthew