Feature: Like the marker itself, prevent the font size of MarkerCaption to resize on zooming

[pamtbaau]

When zooming, the size of the Marker remains the same. However, the fontsize of the MarkerCaption does resize and can therefor become unreadable small and impractical big.

When the fontsize gets impractical on zooming out (eg. too many Markers close together causing overlapping Labels), the minZoomLevel will remove it.

[mikes222]

set strokeMinZoomLevel to a high value in order to prevent zooming.

[pamtbaau]

If been looking around for this property, but cannot find where it can be set...