Log Message:
py-pyobjc: updated to 5.2

Version 5.2
* Updated metadata for Xcode 10.2

* objc.registerStructAlias no longer emits a deprecation warning because it is \ 
still used by the framework wrappers.
  The function is still deprecated though, the deprecation will reappear once \ 
the metadata has been updatd.

* The core bridge now uses PyDict_GetItemWithError(), which may result in \ 
exceptions being raised that were previously swallowed.

* Partially switch to the new buffer API instead of the older Python 2 buffer API.
  The new implementation is more correct, but may keep Python objects alive \ 
longer than the previous implementation, and also affects buffer related \ 
functionality of Python objects. In particular, calling [someData bytes] on a \ 
Python object keeps the Py_buffer alive until the next flush of the \ 
autoreleasepool.

* Fix incorrect metadata for the callback argument to \ 
-[AVCaptureStillImageOutput \ 
captureStillImageAsynchronouslyFromConnection:completionHandler:].

* Add bindings to the “PrintCore” APIs from the ApplicationServices framework.
  Python 2: UserDict.UserDict instances are now bridged to instances of a \ 
subclass of NSDictionary.