predictJunctions: Identify splice junctions
In ldg21/SGSeq: Splice event prediction and quantification from RNA-seq data

Identify splice junctions from genomic RNA-seq read alignments.

1 2	predictJunctions(frag_exonic, frag_intron, min_junction_count, psi, min_anchor, retain_coverage)

`frag_exonic`	`IRangesList` with exonic regions from alignments
`frag_intron`	`IRangesList` with introns implied by spliced alignments
`min_junction_count`	Minimum fragment count required for a splice junction to be included. If specified, argument `alpha` is ignored.
`psi`	Minimum splice frequency required for a splice junction to be included
`min_anchor`	Integer specifiying minimum anchor length
`retain_coverage`	Logical indicating whether coverage for each exon should be retained as an `RleList` in metadata column “coverage”. This allows filtering of features using more stringent criteria after the initial prediction.