[OSM-talk] openstreetmap-carto updates

[Paul Norman]

Version 2.15.0 of the openstreetmap-carto was just released

Full changes: 
https://github.com/gravitystorm/openstreetmap-carto/compare/v2.14.0...v2.15.0

There were a lot of behind the scenes cleanups to the style, but two 
notable changes are landuse recolouring and track restyling.

Landuse colours have been all over the place with the style, with no 
consistency in lightness or colourfulness (chroma).

The recent changes (#599) bring consistent lightness and more consistent 
chroma to residential, retail, commercial, industrial, farmland and 
farmyard. I've also started expressing colours in a perceptual 
colourspace (Lch), although they have to be converted to RGB in the 
style. Another change is borders, which are now much more subtle, 
particularly for unnamed landuse. They have also been made consistent 
across the landuses changed. For farmland, this should help encourage 
tagging of individual fields.

Track rendering based on tracktype has been nonsensical. You can see an 
example at 
https://github.com/gravitystorm/openstreetmap-carto/issues/136#issuecomment-25240763 
of the old types side by side. The changes make it a consistent 
progression from tracktype 1 to tracktype 5, with alternating short and 
long dashes for no tracktype. If you don't like the unknown tracktype 
rendering, go survey it and set it :)