DDLogFileManagerDefault can be deallocated while still KVO'ing itself

[joein3d]

DDLogFileManagerDefault does a [self addObserver:self forKeyPath:@"maximumNumberOfLogFiles" options:kvoOptions context:nil]; in initWithLogsDirectory but never removes itself as an observer. Was able to fix by adding

• (void)dealloc
  {
  [self removeObserver:self forKeyPath:@"maximumNumberOfLogFiles"];
  }