`mi` methods silently fall back to default if `-m` argument is unknown

[bschiffthaler]

#!/bin/bash
unset OMP_NUM_THREADS
srun mi -m aracne -O $SLURM_CPUS_PER_TASK -i headless.tsv -g genes.tsv -o results/aracne/aracne.tsv

This will not actually run ARACNE, as it expects -m ARACNE. It will silently run CLR instead.

Adding @nicolasDelhomme for tracking.