Prepare for 5.2.0 release (#1010)

Author: garrettheel

docs/release_notes.rst

@@ -1,10 +1,12 @@
 Release Notes
 =============
 
-Unreleased
+v5.2.0
 ----------
-* The ``IndexMeta`` class has been removed. Now ``type(Index) == type``.
-* JSON serialization support (``Model.to_json`` and ``Model.from_json``) has been added.
+* The ``IndexMeta`` class has been removed. Now ``type(Index) == type`` (#998)
+* JSON serialization support (``Model.to_json`` and ``Model.from_json``) has been added (#857)
+* Improved type annotations for expressions and transactions (#951, #991)
+* Always use Model attribute definitions in create table schema (#996)
 
 
 v5.1.0

pynamodb/__init__.py

@@ -7,4 +7,4 @@
 """
 __author__ = 'Jharrod LaFon'
 __license__ = 'MIT'
-__version__ = '5.1.0'
+__version__ = '5.2.0'