HV-853 Provide a NonElMessageInterpolator
HV-878 Integrating Optional and JavaFX types
HV-878 Extracting shared method for finding out whether a given class is present on the classpath or not
HV-878 Extracting common base class for unwrappers using ClassMate

* Also using shared instance of TypeResolver
* Moving unwrappers to "internal" package
HV-878 Doc update
HV-853 Adding Adam to copyright.txt