Update to iD v1.6.1

* Remember raw tag editor expansion state across sessions (#2416)
* Translate text in changes section on save panel (#2417)
* Encode URL hash correctly (#2406)
* Capture ⌘-S even in input fields (#2409)
* Added some traffic_calming=* presets
* Prefer power=substation to sub_station
* Include state/province in U.S. and Canadian address formats
* Improve the error message on saving when offline (#2373)