romaonthego/REMarkerClusterer — pull request #6 by toto (2013-05-24 11:27:08+00:00)
Title: Move to fast enumeration in loops to improve performance

Where possible I changed all `for` loops in `REMarkerClusterer` to the `for in` syntax which uses [NSFastEnumeration](http://developer.apple.com/library/ios/#documentation/Cocoa/Reference/NSFastEnumeration_protocol/Reference/NSFastEnumeration.html) and therefore dramatically improves performance.