data objects & domain checks

Initialization with minimal requirements fails.
Errors when no domain or a list as domain passed in DataInt and DataReal.

To reproduce:

DataInt(name = 'myint')
..\src\aaad\data_objects\data_types.py", line 571, in __init__
    domain.type = self.type
AttributeError: 'NoneType' object has no attribute 'type'

DataInt(name = 'varname',domain = [0,10])
...\src\aaad\data_objects\data_types.py", line 571, in __init__
    domain.type = self.type
AttributeError: 'NoneType' object has no attribute 'type'

DataReal(name = 'varname')
...\src\aaad\data_objects\data_types.py", line 345, in __init__
    domain.min_value = float(domain.min_value)
AttributeError: 'NoneType' object has no attribute 'min_value'

DataReal(name = 'varname',domain = [0,1]) 
...\src\aaad\data_objects\data_types.py", line 345, in __init__
    domain.min_value = float(domain.min_value)
AttributeError: 'NoneType' object has no attribute 'min_value'

P.S. Suggest to check all DataObjects initializations.