Connectome LUT: Better parsing
Connectome LUT: Better parsing

- Provide line numbers for lines that result in parsing failure
- Support comma-delimiting in addition to space-delimiting.
- Provide printout of detected column-wise data formatting when overall LUT format is unsupported.

MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3