[BUG] Error on getTotalLength when testing component with vue-trend component inside

[kuroski]

Hello =D.

I'm currently testing one of my custom components, and it uses your lib to render a trendline.
During the tests, when it envolves a chart update, it causes a:

[Vue warn]: Error in nextTick: "TypeError: path.getTotalLength is not a function"

Apparently this error is showed because SVGPathElement.getTotalLength() has been moved to SVGGeometryElement.getTotalLength() from the Web standards.

https://developer.mozilla.org/en-US/docs/Web/API/SVGPathElement/getTotalLength

[axle07]

+1