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The purpose of this fork is to remove unnecessary singletons. The deallocs of ARController and PRARManager are now executed. Location services and events that are received from the accelerometer will also stop.
Totes aquestes accions del locationMath, si nosaltres no les iniciem (i diria que no és així), les hauria d'aturar/netejar el propi locationMath en el seu `dealloc`.