dev: improve raster hillshade
dev: improve raster hillshade

WikimapsAtlas/WikimapsAtlas-generator,WikimapsAtlas/make-modules,WikimapsAtlas/WikimapsAtlas-generator,WikimapsAtlas/make-modules,WikimapsAtlas/WikimapsAtlas-generator,WikimapsAtlas/WikimapsAtlas-generator,WikimapsAtlas/make-modules