[issue #24] initial implementation of the interfaces related to bidirectional conversion
[issue #24] additional package html
[issue #24] additional MatchRating interface that may serve converters to indicate how good they can handle certain data
[issue #24] rating method has to take additional parameters so that implementers may use the convertForward operation to actually test if a given input is valid for the particular converter
Merge branch 'feature/24-converter-facilities' into dev