Option for setting/editing the circle radius

[TurtIeSocks]

trafficstars

• New radiusEdit option
• Makes circles behave similarly to circleMarkers when drawing and editing when set to false
• Defaults to true to maintain backwards compatibility

Admittedly, this is a lot of copy/paste from the CircleMarker counterpart classes. From my testing, everything should behave as it did before without setting radiusEdit, but would appreciate a second pair of eyes.

Goal: Be able to draw circles without having to fuss with the radius, while maintaining their size on the map when zooming, since CircleMarker's scale with zoom.

[TurtIeSocks]

Thanks for the review and comments! Fixed or explained all of the comments in latest commit.

[TurtIeSocks]

@Falke-Design sorry for the tag but anything I can do to move this along?

[TurtIeSocks]

No worries, @Falke-Design, I totally get it :) just wanted to check in. I've resolved all of your latest comments.

[TurtIeSocks]

bump

[Falke-Design]

Superseded by #1216