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MapQuest now requires a dev key for direct tile access #220
The default jQuery Geo map tiles now all say "As of July 11, 2016, direct tile access has been discontinued."
Moving to default to Open Street Map direct tile access. This, unfortunately won't fix older builds of jQueryGeo. We may retroactively alter the original builds on the CDN to help those that use the code.jquerygeo.com CDN link.
The a./b./c.tile.openstreetmap.org subdomains now support SSL, so that's good. https://blog.openstreetmap.org/tag/ssl/