coalescingset
fun coalescingsetOf(comparator: Comparator<SRange> = SeqRangeSort.by(SeqRangeSort.numberThenAlphaSort,leftEdge), vararg ranges: SRange): SRangeSet
Coalescing Sets: When added to set, ranges that overlap or are embedded will be merged. This does not merge adjacent ranges (ie, 14..29 and 30..35 are not merged, but 14..29 and 29..31 are merged) User must supply a comparator - either their own or one defined in SeqRangeSort
Input is a comma separated list of SRanges
return: Output is a Kotlin Immutable Set of SRanges