PDT: Update to v1.5.2

precision_drawing_tools/__init__.py

precision_drawing_tools/pdt_bix.py

precision_drawing_tools/pdt_cad_module.py

precision_drawing_tools/pdt_command.py

precision_drawing_tools/pdt_command_functions.py

precision_drawing_tools/pdt_design.py

precision_drawing_tools/pdt_etof.py

precision_drawing_tools/pdt_exception.py

precision_drawing_tools/pdt_functions.py

precision_drawing_tools/pdt_library.py

precision_drawing_tools/pdt_menus.py

precision_drawing_tools/pdt_msg_strings.py

precision_drawing_tools/pdt_pivot_point.py

precision_drawing_tools/pdt_tangent.py

precision_drawing_tools/pdt_trig_waves.py

precision_drawing_tools/pdt_view.py

precision_drawing_tools/pdt_xall.py