I am trying to use the MarkerClusterer utility library with you plugin:
And I was wondering what would be a good way to go about it. I wouldn't want to start hardcoding into the plugin core.php file but not sure how to implement it from functions.php
Other than including the library itself, MarkerClusterer should only require one line of code along the lines of:
var markerCluster = new MarkerClusterer(map, markers);
markers is an array of placemarks.