Features

• OpenLayers 5 #680
• vector tiles without API key
• OL ungrouped vector tiles
• OL categorized vector tiles
• support polygonZM
• update proj4js #679
• replace debug libs with source maps
• remove CDN option #439
• OL geocoder local #439
• Leaflet reduce geolocate maxzoom #672

Fixes

• Leaflet labels
• icon colour profiles #673
• Leaflet trailing attribution comma #411
• unset "value" error
• correct README #668
• OL label buffer #627