#128 Adding support for enum mapping methods
#128 Raising an error in case an enum constant is mapped more than once
#128 Raising an error in case mapped enum constants don't exist
#128 Raising an error in case source enum constant without corresponding constant in target is not mapped
#146 Making sure result type of bean mapping method and exception types from conversions are properly referenced if they are not imported
Merge branch '146' of github.com:gunnarmorling/mapstruct into gunnarmorling_146
#135 first attempt, UT based on scope AND name now
#135 applied list of MethodSelectors idea.
#135 Formatting and typo fix
#135 Adding some JavaDocs; Removing unused method