use correct css class for latest foundation
RequestAnimationFrame callbacks should double check if editor was destroyed meanwhile.
Fixes #276, #277, #278
Merge branch 'bugfix/protect-on-change-against-destroy' of https://github.com/blabno/json-editor into blabno-bugfix/protect-on-change-against-destroy
Merge branch 'blabno-bugfix/protect-on-change-against-destroy'
Merge branch 'foundation-error' of https://github.com/jiexinhuang/json-editor into jiexinhuang-foundation-error
Merge branch 'jiexinhuang-foundation-error'
Merge branch 'master' of https://github.com/mazswojejzony/json-editor into mazswojejzony-master
Merge branch 'mazswojejzony-master'
Version bump - 0.7.13