add graphics.align.OpticalMapTrack
add invert/delete/duplicate in graphics.align.OpticalMapAlign
color regions in graphics.align.PairwiseAlign
add fancy arrows to graphics.align.OpticalMapAlign
add table headers in graphics.align.demo()
+ Fixed genetic_code param used by annotation.pasa.compare()
+ Added formats.gff.splicecov() which summarizes splice junction coverage
across different isoforms using information from TopHat junctions.bed