bug: QCWrapper creates corrupted files
the QCWrapper starts job like
trimming_tool -f R1 -p R2 trimming_tool -f R2 -p R2
for each mate pair, such that the output for R2 does not contain the same number of reads as R1
the QCWrapper starts job like
trimming_tool -f R1 -p R2 trimming_tool -f R2 -p R2
for each mate pair, such that the output for R2 does not contain the same number of reads as R1