axes_test mockCalc: add default value to minexponent attribute
axes_test mockCalc: add default value to minexponent attribute

etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,aburato/plotly.js,aburato/plotly.js