biowdl/tasks v2.1.0

Make intervals optional for GATK CombineGVCFs Updated biowdl-input-converter version. GATK CombineGVCFs memory was tripled to prevent it from using a lot of CPU in Garbage Collection mode. Updated parameter_meta sections for Minimap2 and TranscriptClean to wdl-aid format. Updated cores variable for TALON, the default is now 4. Updated TALON to version 4.4. Added parameter_meta sections to the following tools: htseq cutadapt collect-columns stringtie fastqc Updated star default image to 2.7.3a. Hisat2 now indexes the resulting BAM file. Samtools index now also works without setting a path for the output. Bugfix: Biowdl-input-converter now makes sure the output directory exists