start support of 'plate' integration/connectivity type
update CMapping - new mtx_t attribute
update Approximation.describe_geometry() for plate integration
update get_physical_qps() - new map_kind argument
update Term.get_physical_qps() for plate integration
update get_shape_kind(), Term.iter_groups() for plate integration
update FieldVariable.get_data_shape(), .evaluate() for plate integration
update Approximation.get_connectivity() for plate integration
new transform_asm_vectors(), transform_asm_matrices()
update TLMembraneTerm.weak_function() - use transform functions
Merge branch 'plate_mapping'