Update changes

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=4

python39.changes

@@ -2,6 +2,31 @@
 Tue Jul 14 20:45:11 UTC 2020 - Matej Cepl <mcepl@suse.com>
 
 - Update to 3.9.0b4:
+  - PEP 584, Union Operators in dict
+  - PEP 585, Type Hinting Generics In Standard Collections
+  - PEP 593, Flexible function and variable annotations
+  - PEP 602, Python adopts a stable annual release cadence
+  - PEP 615, Support for the IANA Time Zone Database in the
+    Standard Library
+  - PEP 616, String methods to remove prefixes and suffixes
+  - PEP 617, New PEG parser for CPython
+  - bpo#38379, garbage collection does not block on resurrected
+    objects;
+  - bpo#38692, os.pidfd_open added that allows process
+    management without races and signals;
+  - bpo#39926, Unicode support updated to version 13.0.0;
+  - bpo#1635741, when Python is initialized multiple times in
+    the same process, it does not leak memory anymore;
+  - A number of Python builtins (range, tuple, set, frozenset,
+    list, dict) are now sped up using PEP 590 vectorcall;
+  - A number of Python modules (_abc, audioop, _bz2, _codecs,
+    _contextvars, _crypt, _functools, _json, _locale, operator,
+    resource, time, _weakref) now use multiphase initialization
+    as defined by PEP 489;
+  - A number of standard library modules (audioop, ast, grp,
+    _hashlib, pwd, _posixsubprocess, random, select, struct,
+    termios, zlib) are now using the stable ABI defined by
+    PEP 384.
 - Remove upstreamed patches:
   - F00102-lib64.patch
   - SUSE-FEDORA-multilib.patch