v1.3.0 Added Chamfering of threads & made threads a component & Grouped on timeline

Added the option for Chamfering the top of the threads & both ends of the threaded nut.

Since I had to save 3 more values from the Dialog input, that file is now called DialogInput_V3.txt

Fixed the way the Nut was cutting the threads so there is no longer an empty body.

Moved the global variable declarations to beginning of each routine.

The metric_V2.txt file changed to metric_V3.csv. I made it a .csv extention to make it easier to open in a spreadsheet & added 4 more fields to it. Chamfer Width is the only one of those 4 fields that is used. The other 3 are just for reference.