chore: GA release for django spanner library (#731)

* chor: GA release for django spanner library

* docs: add GA pypi and python version images in readme file

* chor: bump version number as GA release has major updates

README.rst

@@ -1,6 +1,8 @@
 Cloud Spanner support for Django
 ================================
 
+|GA| |pypi| |versions|
+
 `Cloud Spanner`_ is the world's first fully managed relational database service
 to offer both strong consistency and horizontal scalability for
 mission-critical online transaction processing (OLTP) applications. With Cloud
@@ -13,6 +15,12 @@ workloads.
 - `Client Library Documentation`_
 - `Product Documentation`_
 
+.. |GA| image:: https://img.shields.io/badge/support-GA-gold.svg
+   :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#general-availability
+.. |pypi| image:: https://img.shields.io/pypi/v/django-google-spanner.svg
+   :target: https://pypi.org/project/django-google-spanner/
+.. |versions| image:: https://img.shields.io/pypi/pyversions/django-google-spanner.svg
+   :target: https://pypi.org/project/django-google-spanner/
 .. _Cloud Spanner: https://cloud.google.com/spanner/
 .. _Client Library Documentation: https://googleapis.dev/python/django-google-spanner/latest/index.html
 .. _Product Documentation:  https://cloud.google.com/spanner/docs

setup.py

@@ -16,7 +16,7 @@
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'
 # 'Development Status :: 5 - Production/Stable'
-release_status = "Development Status :: 4 - Beta"
+release_status = "Development Status :: 5 - Production/Stable"
 dependencies = ["sqlparse >= 0.3.0", "google-cloud-spanner >= 3.11.1"]
 extras = {
     "tracing": [

version.py

@@ -4,4 +4,4 @@
 # license that can be found in the LICENSE file or at
 # https://developers.google.com/open-source/licenses/bsd
 
-__version__ = "2.2.1b4"
+__version__ = "3.0.0"