Function merge

merge(range1: RevSelectionRange, range2: RevSelectionRange): RevSelectionRange
Operator that merges given ranges.
Parameters
- range1: RevSelectionRange
  a range to merge with range2
- range2: RevSelectionRange
  a range to merge with range1
Returns RevSelectionRange
A single merged range.

Remarks
Both parameters are assumed to be ordered arrays.

The ranges are assumed to be overlapping or adjacent to one another.

Note: This operator is commutative.