Allow more persistent configuration

[jason-o-matic]

My first thought is just query params that store the values of the dropdowns, when a dropdown was updated change the url. I guess cookies might work as well but ideally I could bookmark links to different configurations that I commonly use.

I commonly use a style that isn't one of the examples. It's not a huge deal, but it'd be nice if I didn't have to look up the settings for what I used last time so I could always use the same style.