Remove unimplemented properties.
Correct defintions of equals() and hasCode().
Add setOnInfoWindowClickListener and remove old method from Marker.
Refactor showInfoWindow() to remove need for exposing internal method.
Make select/deselectMarker public. Add getSelectedMarker.
Fix bug where you couldn't reselect a closed info window.
Add empty constructor to LatLng and LatLngZoom.
Fixes#2546Fixes#2631Fixes#2448