Merge branch 'develop' of https://github.com/biowdl/tasks into BIOWDL-380

CHANGELOG.md

CPAT.wdl

biopet/biopet.wdl

biowdl.wdl

bowtie.wdl

bwa.wdl

chunked-scatter.wdl

collect-columns.wdl

common.wdl

gatk.wdl

gffcompare.wdl

gffread.wdl

hisat2.wdl

manta.wdl

minimap2.wdl

multiqc.wdl

picard.wdl

samtools.wdl

scripts

somaticseq.wdl