#169 Copying sources from core-common to core/core-jdk8 using maven-resources-plugin to allow faster builds and nicer roundtrips in IDEs
#202 Refactor integration tests to use Maven Verifier, different JDKs using toolchains, and the Eclipse JDT compiler.
#297 check presence of @Mapper annotation
#298 fix for not found annotation nullpointer
#268 introduction of qualifiers
#310 Missing sourceType import in adder functionality
#307 fix non used imports in adder functionality
#305 Fix for target-getter-only in combination with expressions or constants
#305 Removing superfluous line breaks
#202 allow remote debugging an intetegration test using a command like "mvn test -Dtest=SimpleTest#oracle_java_6 -DprocessorIntegrationTest.debug=true"
#306 IllegalArgumentException due to void type parameter
#306 Extracting separate test for reproducing this issue
#302 refactoring of MappingCreationProcessor: using Builders to address smaller concerns
#302 Making MappingContext immutable
#302 Formatting
#302 Renaming MappingContext -> MappingBuilderContext
#302 Removing Method#printMessage()
#302 Formatting
#252 merging reverse mapping with forward mapping. Fixing reverse check in Mapping.
#252 Renaming @ReverseMappingMethod to @InheritInverseConfiguration

* Improving error messages
* Fixing some typos