apneadiving/Google-Maps-for-Rails — pull request #347 by diazruy (2013-06-05 16:43:22+00:00)
Title: Bump API version to support visualRefresh

Google has enabled opt in for their [visual refresh](https://developers.google.com/maps/documentation/javascript/basics#VisualRefresh) by adding `google.maps.visualRefresh=true`, but this option does not work on version 3.9 of the API which is currently being used.