Make minZoom optional on MarkerManager.addMarker

[GoogleCodeExporter]

What steps will reproduce the problem?
1. (new MarkerManager(map)).addMarker(marker)

What is the expected output? What do you see instead?
I'd like to see the marker shown on the map if minZoom is not passed in. In
other words, addMarker(marker) should behave the same as addMarker(marker, 0).

Original issue reported on code.google.com by [email protected] on 3 Mar 2010 at 3:13