Introduce Ns at random positions

[arnikz]

Currently, the data/test.fasta does not include Ns so data/reference_N_regions_bed remains empty after

sv-channels/run.sh

Lines 84 to 89 in 923b9ce

	# extract N's from sequence into BED
	p=seqkit
	cmd="$p locate -i -P -r -p "N+" --bed \"$FASTA\" -o \"$REF_REG\""
	JOB_ID=$(submit "$cmd" "$p")
	JOBS+=($JOB_ID)

Related to #76, #80.

[arnikz]

Use the following code to introduce point mutations ({A,T,G,C} -> N) into sequences:

$ for p in $(seq 2000000 | shuf -n 10); do
  seqkit mutate -p "$p:N" test.fasta -o test-$p.fasta
  mv test-$p.fasta test.fasta
done