iD 1.6.0

* Add nework field to Road Route relation preset (#2372)
* Updated TIGER layer to use TIGER 2014
* Added support for street-level imagery from Mapillary
* Added support for taginfo projects data
* Better infer restriction for no_u_turn (#2345)
* Update to rbush 1.3.3
* Improved a variety of presets
* Added `comment` url param to prefill changeset comment (#2311)