kqueue.py implementation using removed path_for_inode method

[endform]

This issue is occurring in 0.8.3. A simple search of the code shows kqueue.py using the now non-existent method.

Exception in thread Thread-4:
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/SNIP/watchdog-0.8.3-py2-none-any.whl/watchdog/observers/api.py", line 146, in run
    self.queue_events(self.timeout)
  File "/SNIP/watchdog-0.8.3-py2-none-any.whl/watchdog/observers/kqueue.py", line 695, in queue_events
    new_snapshot)
  File "/SNIP/watchdog-0.8.3-py2-none-any.whl/watchdog/observers/kqueue.py", line 630, in _queue_renamed
    new_snapshot.path_for_inode(ref_stat_info.st_ino))
AttributeError: 'DirectorySnapshot' object has no attribute 'path_for_inode'