Address interpolation. Parse WKB in JavaScript, makes assumptions.

First number in the query is the address number. Since the address
data is in mercator right now, the result is too.

* [ ] make address number extraction pickier - right now `washington, dc 20009` will have 20009 as an address number
* [x] make wkb parsing mature
* [x] decide on epsg4326 or mercator for datum
* [ ] tests
* [x] handle non-numeric addresses in PR