bump arbitrary array copy cutoff from 2 to 3 within lib.minExtend
bump arbitrary array copy cutoff from 2 to 3 within lib.minExtend

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