update has** optimization flags on mousedown
update has** optimization flags on mousedown

... as opposed to on every mousemove.

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