Attaching sources for mapstruct-jdk8 module
#220 Allow getter as target accessor for Map types
#220 don't create new instances for collection/map properties when using addAll/putAll
#220 Avoiding negated method name
#178 fix a new unused import that crept in, added a test for it
#187 introducing constant mapping
#187 adding unit test to make sure that reverse mapping also works for source constants
#187 adapting for #198
#187 Minor clean-up and formatting
#187 Improving JavaDoc, adding new attribute to JDK 8 version of @Mapping
#214 addressing superfluous NPE checks and adding NPE rudimentary unit tests
#14 Add basic support for @AfterMapping / @BeforeMapping methods
#14 support @TargetType in @AfterMapping/@BeforeMapping methods
Fix error message for subsequent tests that fail with compile errors
#14 some improvements as hinted in code review by Sjaak, added / extended some test cases