defining categorical type
new OrderedDataType for ordered attribute
...and according attribute

see last commit
extending CategoricalDataType

with CategoryVariable, Initial/PreviousStateVariable's
using new CommonCategoryVariableType
new type ListOfCategoriesType
few things fixed, min/maxOccurs mainly in DDmodel
new DependanceType and ProbabilityType

with accruing elements
new Dependance and LinkFunction attribute types
new CommonDiscreteStateType for

CurrentState, PreviousState and Condition
minOccurs fixed