Fix(Spiderfier): min leg distance for circle and skip 1st pos for spiral
Fix(Spiderfier): min leg distance for circle and skip 1st pos for spiral

so that markers (especially important for Circle Markers, which are displayed under DivIcons by default) are positioned outside the default Cluster icon in all situations.

ghybs/Leaflet.markercluster,ghybs/Leaflet.markercluster,Leaflet/Leaflet.markercluster,Leaflet/Leaflet.markercluster