replaced log4j and commons-logging by slf4j + Logback
moved generator workflow to "src/main/resources/" to get it copied by the resource plugin and picked-up by the shade plugin
move the MWE components into the new package "org.sculptor.generator.mwe2"
add a Logback configuration
now the class and the file have the same name
refactored the code used for running the workflow into the new class SculptorRunner and added a replacement for MWEs RuntimeResourceSetInitializer (named ContextClassLoaderAwareRuntimeResourceSetInitializer) which creates a list of classpath entries retrieved from the current threads context classloader (only URLClassLoader are supported)