- Fixed a bug regarding IfcUnitAssignment

- Separate IFC parsing library and geometry libraries [#3395025]
- Added example for IfcParse usage without geometry or Open CASCADE functionality
- Cleanup of vcproj Open CASCADE dependencies
- Added function to query parent class type in IfcExpressParser.py

src/ifcgeom/IfcRegisterConvertShape.h

@@ -0,0 +1,14 @@
+#include "IfcRegisterUndef.h"
+#define SHAPE(T) \
+	if ( l->is(T::Class()) ) { \
+		try { \
+			bool b = convert(reinterpret_pointer_cast<IfcBaseClass,T>(l),r); \
+			if ( b ) { \
+				Cache::Shape[l->entity->id()] = r; \
+				return true; \
+			} else { return false; }\
+		} catch(...) { Ifc::LogMessage("Error","Failed to convert:",l->entity); } \
+	}
+#include "IfcRegisterDef.h"
+
+#include "IfcRegister.h"