Add request proxying and frontend
Add tree images via Google image search
Randomize image selection, use species+common name
Update data host and REST interface
Request species individually since the backend can't handle CSV. Apparently compojure's routing treats commas strangely.
Nevermind, let's just use ampersands
Fix image requests for FF; retry on 404'd images
Clear map markers if request fails
Randomly select an initially selected tree
Add readme
Toggle between markers and heatmap views
Just moving JS around
More clojure-y: rand-nth