Features

• Experimental Mapbox GL JS support
• attribution uses HTTPS
• QGIS in attribution
• Leaflet scale-dependent tile layers (thanks, @jaminmelville)

Fixes

• Leaflet labels with underscore in layer name
• Leaflet label error
• Leaflet heatmap
• Leaflet no symbols renderer
• catch dev console crash
• fix tile_json import
• fix 2.5D detection (thanks, @tfh-galbraith!)
• correct changelog in metadata