Request: Hide labels when scale is too small to read them

[jspautsch]

Native Cytoscape has the min-zoomed-font-size option that stops text from rendering when the scale is too small to read it. Since this plugin uses arbitrary HTML, a font size would probably not work, but perhaps an option to set a minimum scale, after which all labels would be hidden, would be useful.

In my project I threw some code in to updatePanZoom method to add "display: none" to the container when the scale goes below 0.3. A way to pass in a specific zoom level would of course be preferred.

Thanks! Love this plugin