Improve the error message on saving when offline (fixes #2373)
U.S. and Canadian address formats
Adjust width of state input
Prefer power=substation to sub_station
Adding some traffic_calming=* presets

* I'm assuming a traffic_calming=table always has a pedestrian crossing on it;
* It would be good to have a icon "bump" in the future.
Capture ⌘-S even in input fields (fixes #2409)
Need to encode = as well as & (fixes #2406)
Encode everything except a whitelist of special chars

see #2406
Translate text in changes section on save panel. (fixes #2417)
Remember raw tag editor expansion state across sessions (fixes #2416)
Use interpolation rather than concatenation
Write presets and imagery to standalone files
Update docs about presets and fields internals.
Select first available imagery layer
Fix some tests
work in progress. separate test spec for accessors.
Add external imagery test
Moved area-keys to data, and process it during runtime
Direct areaKeys tests