[NSArray indexesOfObjectsPassingTest:] doesn't exist in Swift

[nickasd]

It could be translated to IndexSet(array.enumerated().filter { true }.map { $0.offset }).
http://swiftify.me/qb8r27

[tomattoz]

The same issue as in #102

[alex-swiftify]

@tomattoz This seems like trivial to fix using metadata.
#102 is now fixed.