Proper way to add gcode exporter

[jackcarrozzo]

Hi,

I wrote a gcode exporter class in the style of Exporters/GCode/LinuxCNC.py for my Yasnac controller. I'm running the latest release, 0.6.4. Couple q's:

• It looks like the gcode exporter used is hard coded to LinuxCNC in Plugins/ToolpathExport.py - I'm happy to make a PR to plumb that through as a configurable option if you let me know how you'd like it to work.
• Looks like master/0.7 does a lot of reorganization and cleanup - would you like my PR to be against 0.6.4 or should I work on getting master/0.7 to run and make my changes against that?

Thanks for making this stuff! Works extremely well.

[sumpfralle]

I am glad to hear, you like pycam!

I share your evaluation of the two branches: lots of things changed. Thus I would prefer such a change for master instead of stable/0.6. For your personal use-case it should be easy for you to just switch the hard-coded default locally (in case you want to / need to stick to 0.6).

Feel free to take a quick look and see, how trivial a configurable exporter would be in master.
Otherwise I would take a look at it tomorrow night and try to share thoughts or prepare a bit.

Your contribution is very welcome!