added ability to swap x&y data, optionally swapping axis config too
added ability to swap x&y data, optionally swapping axis config too

asolagmbh/plotly.js,plotly/plotly.js,aburato/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,aburato/plotly.js,iongroup/plotly.js,plotly/plotly.js,etpinard/plotly.js