Version 0.3.4

[0.3.4]

• fixing #8: AssertationError when unifying TSS/PAS between transcript
• improved domain plots: ORF start and end do not appear like exon exon boundaries.
• API change: separated ORF prediction from QC metrics calculation.
• new feature: count number of upstream start codons in Gene.add_orfs() (called by default when adding QC metrics to transcriptome)
• new feature: calculate Fickett testcode and hexamer score for longest ORFs, to separate coding and noncoding genes.