filtering and trimming of long read sequencing data

 Filtering and trimming of long read sequencing data. Filtering on
 quality and/or read length, and optional trimming after passing filters.
 Reads from stdin, writes to stdout. Optionally reads directly from an
 uncompressed file specified on the command line.
 .
 Intended to be used:
 .
  1. directly after fastq extraction.
  2. prior to mapping.
  3. in a stream between extraction and mapping.