Packaging for 3.3.4 (#266)

* Add entry in HISTORY.rst, setup.py and shotgun.py for the version 3.3.4
* Complement description of python 3.9 coverage
* Add s in verbs in the history

Author: 000paradox000

HISTORY.rst

@@ -4,6 +4,13 @@ ShotGrid Python API Changelog
 
 Here you can see the full list of changes between each Python API release.
 
+v3.3.4 (2022 June 9)
+====================
+- Adds Retries on 503 Errors when uploading to S3.
+- Updates AMI Documentation to Support Python 3.
+- Adds Python 3.9 coverage in Azure Pipeline CI tests.
+- Fixes git protocol for the installation.
+
 v3.3.3 (2021 December 1)
 ==========================
 - Replaces shotgunsoftware urls with Autodesk Knowledge Network and ShotGrid Developer Documentation pages.

setup.py

@@ -27,7 +27,7 @@
 
 setup(
     name='shotgun_api3',
-    version='3.3.3',
+    version='3.3.4',
     description='Shotgun Python API ',
     long_description=readme,
     author='Shotgun Software',

shotgun_api3/shotgun.py

@@ -122,7 +122,7 @@ def _is_mimetypes_broken():
 
 # ----------------------------------------------------------------------------
 # Version
-__version__ = "3.3.3"
+__version__ = "3.3.4"
 
 # ----------------------------------------------------------------------------
 # Errors