v1.6.0
Changed attribution control default link to HTTPS (#6593)
Fix layers control description in docs. Fix #6720 (#6727)
upgrade deps, fix indenting (#5743)
docstrings for the zoomControl map property (#6254)
Explicitly remove controls from the map on map unload (#6488)
ES2015 modules: Add index.js files to subdirectories/namespace (#5329)