v1.2.0

Add support for multiple control groups.
- Support for SDA robots, or multiple individual robots and/or external
axes.
- Add new command message for controlling up to 4 groups.
- Add new position-feedback message to send all group data.

Add compatibility for DX200 controller.

Convert MotoPlusIDE projects into Visual Studio solution.
- Maintained legacy compatibility for MPIDE.

Improve I/O feedback signals.
- Allocate additional signals for future expansion.
- Add more cases where feedback signals are used.

Improve error handling
- Add additional text and I/O feedback in error cases