
Added support for mappings of type: {'A': ['x', 'y']} (which maps from A to x and from A to y) and for mappings of type: {'x', 'y', 'z'} (which maps from x to x, y to y, z to z).
Added support for mappings of type: {'A': ['x', 'y']} (which maps from A to x and from A to y) and for mappings of type: {'x', 'y', 'z'} (which maps from x to x, y to y, z to z).