Correctly handle the scenario where structs have disabled the xml facet
Refactor the generators in the gwt_rpc and imit facets so that mock modules can be generated either as test or main sources.
Change the exception generated when modules do not align to a more accurate error message.

This only became obvious after sharing gwt code between modules became possible
Make it possible to explicitly specify the base URL for services associated in a system. Useful when multipl applications are combined.
Make it possible to explicitly disable attributes from being replicated
Support disabling and enabling of facets on exceptions