Setting originalContent and changedContent didn't work for me. I changed these two lines:
original=$(settings.originalContainer, this).text();
changed=$(settings.changedContainer, this).text();
... to
original=settings.originalContent||$(settings.originalContainer, this).text();
changed=settings.changedContent||$(settings.changedContainer, this).text();
... to use originalContent and changedContent when set, rather than originalContainer and changedContainer.
Setting originalContent and changedContent didn't work for me. I changed these two lines:
... to
... to use originalContent and changedContent when set, rather than originalContainer and changedContainer.