misha

Use when importing external data (WIG / bigWig / BED / TSV / BAM / 2D contacts / array matrices) into a misha track DB, when picking which `gtrack.*import*` / `gtrack.create_*` / `gtrack.liftover` / `gtrack.copy` variant to call, or when a track import fails opaquely or produces an all-zero / all-NaN track.