.mmg file support

[tyanderson91]

The RichAuto controller as used by the Axiom Precision line of CNC machines requires Gcode in the form of a file with extension ".mmg". Can this file extension be added?

[github-actions]

Hello and welcome! Thanks for creating your first issue! Someone from our community will get back to you soon!

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.

[Msobas2]

see pull request #72 as it will enable

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.

[mikecentola]

Thank you! Will add!