Previous page(s) tracked

[hoopes]

Hi,

This is definitely my favorite router for cljs I've found so far - I was wondering if you folks think that keeping track of the previous pages visited would be worth looking at? My use case is something like

If I'm on page x, I want to make sure I do something (like send an event to refresh a 
search to drive a table). But, I only want to do it if I'm transitioning from some other 
particular page (or set of pages...).

If I knew the previous page, I could make a decision on when to send that event. You could keep track just of the previous page, or a list of the most recent x pages. Come to think of it, is this something we can get from goog.History, and if so, does it make sense to include in this router?

I appreciate anyone taking the time to read this, even if it's a bad idea (after typing this, I gotta go look closer at History...)

Thanks!