Serlio 1.0.0 Beta 1

We are getting near to Serlio v1.0:

• Based on CityEngine 2019.0
• Added attribute sorting in the Maya node editor like in CityEngine.
• Fixed saving of string rule attributes in Maya scene.
• Fixed connectivity of generated meshes and normal orientation.
• Fixed handling of rule attribute annotations (enum, range).
• Fixed tex-coords handling in case some meshes do not have any.
• Performance optimizations.
• Rebranding to "Serlio" in UI.
• Publication of source code on github.