Also:
- Via barrel plating thickness setting. (important when exporting a STEP) DONE
- Hide/display all SMD/THT components. (helpful on a manual assembly line) DONE
- Components without a body (like a test point or edge fingers) need some means to be selected and highlighted. DONE
- ODB++ may contain multiple projects, like a board and a panel. We need some means to select what to load.
- Export Nets list and Components list to csv file
