allow axes to be flipped with parallel coordinates

Hi,
we are moving from D3.js parallel coordinates (http://syntagmatic.github.io/parallel-coordinates/) to plotly.js and found that most of our needs are catered already. But the very basic option to flip an axis (see minimal example via link above, doubleclick on axis label) does not seem to be present in the plotly.js parallel coordinate chart. It is very useful to get a 'nicer' more consistent view of the data when there are complementary data in neighbouring axes. Could you consider adopting the axis flipping option in the parallel coordinates chart of plotly.js?

plotly.js の平行座標チャートから始め、軸ラベルのダブルクリックを含めて、軸の操作をリンク先の D3.js の最小限の例と比較します。完了の条件は、ユーザーが軸を反転し、要求された、より一貫性のあるデータ表示を得られることです。