beta2 version and CHANGES update (#1643)

Author: chayim

CHANGES

@@ -1,3 +1,10 @@
+# DEPRECATED
+
+This file is historic. Starting with redis-py 4.0.0b1, please see the GitHub releases page at
+https://github.com/redis/redis-py/releases.
+
+------------------------------------------------------------------------------------------------
+
 * (in development)
     * BACKWARDS INCOMPATIBLE: Removed support for end of life Python 2.7. #1318
     * BACKWARDS INCOMPATIBLE: All values within Redis URLs are unquoted via

redis/__init__.py

@@ -31,7 +31,7 @@ def int_or_str(value):
         return value
 
 
-__version__ = '4.0.0b1'
+__version__ = '4.0.0b2'
 VERSION = tuple(map(int_or_str, __version__.split('.')))
 
 __all__ = [