Updated OAQATypes.xml to 0.2.2 #12
* Merged annotation QuestionClass with Question, and rebased Question on
GerpAnnotation instead of InputElement.
Updated wrapper classes and core gerp phase definitions: now refer to
generic types that extend interfaces, instead of abstract classes.
Changes in 0.2.3 #12
* Added new type Parse to aggregate NLP annotations, e.g. predicates,
named entities, semantic roles.

Added wrapper class
Added AbstractParseGenerator and AbstractParseEvidencer #12