CSXCAD v0.5.0

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
matlab: disable re-adding an existing property & bug fix in AddProperty

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
matlab: disable re-adding a property even if it exist in a different type

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
matlab: as it has not vargs, allow re-adding metal properties for simplicity

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
CSXCAD v0.5.1

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>