Clarify that the catchall line-label applies to lots of stuff.
Increase text-spacing, to match old style.
Separate out the linear (i.e. roads+railways) stuff from the rest.
Second thoughts, be slightly clearer on the name.
Move point of interest text labelling into amenity-points file.
Move national park boundaries into admin, and rename layer for clarity.
Move remaining items into landcover.mss
Disable text-clip with repeated road names, and add repeat spacing for higher classification roads.
Reorder power lines, so that they don't draw over icons, placenames, stations etc.
Add CC0 license.

Based on investigations by Sven Geggus, the majority of contributors to the
original OSM stylesheets are in favour of a CC0 license, or have not
contributed towards the cartography brought forward into this project.

If anyone can identify their copyrightable contributions within this project
that they do not wish licensed under CC0, then I'll happily and immediately
remove them.
Separate out road colours into variables. Base tunnels on main fill colours.