title: @property definitions with ARC: Is strong default now?
body: <p>Just running the ARC refactoring tool on the new xcode 4.3.1 and noticed that my (nonatomic, retain) properties are being swapped out for just (nonatomic) instead of (nonatomic, strong) like in the previous xcode.</p>
  
  <p>My code seems to run fine after this change so I am assuming that it is defaulting to strong anyway, anyone know why things have changed with the ARC converter?</p>