Fixed test data in ResourceManagerable test
Added resource loader test.
Added tests for string and vector loader
Added XML source
Added XMLSource and a first implementation
Added node scanning
Added xml resource example
Added annotation scanning
Added JUNIT test for XMLSource
Added data node implementation
Added data source event system
Added observer pattern
Added basic implementation of managers.
Added equals and hashcode methods
Changed JUNIT test for resource managerables. Changed mock data source.
Enhanced XMLSource test
Fixed deferred resource loading bug
Created sub-packages for resources
Implemented and tested data source code.
Added validator and factories for resource definition