Tentative start on saving in localstorage.
Tentative start on saving in localstorage.

I think using the standard PNG+JSON would be better, though...

PeterReid/tagpro-map-editor,steppin/tagpro-map-editor,steppin/tagpro-map-editor,SomeBall-1/tagpro-map-editor,PeterReid/tagpro-map-editor,SomeBall-1/tagpro-map-editor