Test should import relatively
Added (currently failing) tests from the json-patch-test test suite
Changed to->path and path->from for move and copy operations (changes in spec)
Add operation now replaces existing value without error (spec change)
Bought tests up to date
Added some extra doc comments to apply_unsafe
Add json-patch-test suite tests to browser runner
Adding to the root should replace the whole document
Test for replacing root of document