added delete/ignore_downstream job functionality
Much simplified. Now always expects ResultSet and never creates a DataSet without a FeatureSet
added CCAT
Updated processing and parsing code
Added output parsing and filter max peaks
Added _init/_run/run_peak_caller. Updated checksum handling in get_files_by_formats, merge_bams and run_aligner.
added some todos and comments around samtools sort and BGZF block bug
Added some extra info to throw statements in new