CityDoctor Version 3.17.3

See merge request !34

extend all polygon wrong orientation test to handle inward facing geometries
fix validation plan not written when validating in stream mode

add more information in global error table

extending visitor and add abstract visitor

Cleanup Visitor implementation

See merge request !33

Version 3.17.2

See merge request !32

Resolve "Update Dependencies"

See merge request !31

Visitor rework

See merge request !30

CopyHandler and the Copyable-Interface are obsolete due to Copy.copy
offering the object-copying functionality with serialization.