* fixes so we match the transformer based on name properly.
* changed the signature on the FieldMatcher.
* introduced a names option so you can filter in name specificly.
* changed so the matcher UI uses the new options format.
* moved the exported functions together.
* changing editors a bit.
* made the filter by name work with both regex and name filtering.
* fixed failing tests and make sure we always parse regex the same way.
* removed unused code.
* simplified to make the existing field overrides still working.
* fixed issue reported by hugo.
* added tests for the name matcher.
* added tests for filter by name.
* added more tests.
