Renamed as much as I could find to exstatic, as the changes are far enough to make it a different library (it may not apply to the same use cases as the original due to the lack of a mutex now, and the differing link building). Not tested because bundler won't let me run the specs till this is checked in.
--amend
Added newer json because it was nagging me to.
Specs now pass, everything appears to have been renamed.
Merge branch 'rename' into develop