BioToolBox-v1.64

• Added support for Encode gappedPeak files. Also support for
  gleaning file formats from bed track lines. This should make
  future file formats easier to support in the future.
• Fix critical bug with skipping duplicate features from GTF
  files, particularly from Ensembl where exons share the same exon ID.
• Fix double-counting of stranded alignments in bam2wig script.
  Also correctly set minimum paired-end size.
• Fix bug to correctly count FPKM and TPM over length-adjusted
  features in script get_datasets.
• Fix bug with filtering transcripts in script get_features.
• Reset and clarify behavior regarding stop codons when parsing
  and exporting transcript features for various annotation formats.
• Add single-letter option support to script get_gene_regions.