dom-text-matcher:
- Added	support	for passing config objects to search
- Made the (previously separate) matchDistance and matchThreshold parameters into options
- When searching fuzzy, the calculation of Levenhstein distance and visual diff is now optional
- For fuzzy searching, centralized the calculation of Lev. distance and	visual diff.
  (Earlier, short and long segments were handled differently.)
- API change: changed for the diff data	is returned
- Small	internal changes

demo app:
- Updated to follow API	changes
Fixed a bug