function compareRanges(r1, r2) {
		return (
			r1.start.row === r2.start.row &&
			r1.start.column === r2.start.column &&
			r1.end.row === r2.end.row &&
			r1.end.column === r2.end.column
		);
	}
Compare two ranges
@param {AceAjax.Range} r1
@param {AceAjax.Range} r2
@returns {boolean}