Highstock doesn't display range when min equals max #1213
This is displayed as expected once we add a line width. Perhaps for this reason we should consider enabling the line by default? We disabled it by default to allow drawing clean shaded areas, but we are willing to reconsider. A 1px line with no shadow makes a minimal footprint. See http://jsfiddle.net/highcharts/czfCP/2/.
… disappearing altogether in ranges where the min and max are equal. Closes #1213.