remove 'emphasis'

[Per Franck <pe...@gmail.com>]

is there a way to remove 'emphasis' for a series or chart as a whole?

it seems like mouse-hovering a series brings it to the forefront and does
an animation routine on color and line width. aside from being disruptive,
this has a pretty steep performance impact on my implementation and though
i was able to reduce it by adjusting the linestyle i would like to disable
it completely.

thanks

-- Per