Illumina-utils

Includes a minor fix to make NovaSeq sequencing results work again.

For some reason the vast majority of bases that are generated by NovaSeq seem to have a quality score of 30. As a result, the C33 check in `iu-filter-quality-minoche` fails all of them since it expects an over average Q30. With this change those reads are kept in downstream analyses.

Includes a fix for an `iu-trim-fastq` bug that treated compressed input/output files reported in 29 by FlorianTrigodet.

Includes a fix for the quality curve generation step reported in 28.

Performance improvements for `iu-subsample-fastq`.

semiller10 presents `v2.9` with minor updates, including the following:

* Forward and reverse reads now can be of different lengths in read merging.
* Multithreading chunk evenness fix in read merging.

Minor bug fix for multi-threaded merging of paired-end reads.