iwyu
Do not display boundaries outlines before zoom 5 (cf #221)
Include admin outline at zoom 4 (cf #221)
Do not take "stream" as possible value for water area (cf #226)
Remove stream also from water_gen0/1 (cf #226)
Add LICENCE (fix #237)
fix typo
Merge pull request #239 from mkoniecz/typo

fix typo
Add licence info on README (cf #237)
natural=grassland (fix #242)
Update DEM part in README, plus update cartocc.json.sample
Add missing types, to ease run without millstone
README syntax
landuse=education as amenity=school (fix #229)