- compat: 

  * Add javadoc; export the compat package using version 2.0.2; import new dm api using version range [3.0.0, 4.0.0)

- core: 

  * export the public package using version 3.0.0
  * The org.apache.felix.dm.resources.BundleResourceRepository should be exposed as an interface, like dependencies

- test: 

  * add test for compatibility library