Build a GFF3 feature lookup based on interval trees. See also petlx.interval.facetintervallookup().
New in version 0.2.
Join with a table of GFF3 features. See also petlx.interval.intervaljoin().
New in version 0.2.
Left join with a table of GFF3 features. See also petlx.interval.intervalleftjoin().
New in version 0.2.