chore: prepare for release 4.0.0 (#372)

* changelogs updated

* PRs reordered in changelog

* date updated

* chore: Prepare for release 4.0.0 (#374)

* chore: Prepare for release 4.0.0

* Fix typo

* chore: bump version.py

Co-authored-by: Matjaz Pirnovar <[email protected]>
Co-authored-by: John Nguyen <[email protected]>

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Optimizely Python SDK Changelog
 
+## 4.0.0
+January 12th, 2022
+
+### New Features
+* Add a set of new APIs for overriding and managing user-level flag, experiment and delivery rule decisions. These methods can be used for QA and automated testing purposes. They are an extension of the OptimizelyUserContext interface ([#361](https://github.com/optimizely/python-sdk/pull/361), [#365](https://github.com/optimizely/python-sdk/pull/365), [#369](https://github.com/optimizely/python-sdk/pull/369)):
+	- setForcedDecision
+	- getForcedDecision
+	- removeForcedDecision
+	- removeAllForcedDecisions
+
+* For details, refer to our documentation pages: [OptimizelyUserContext](https://docs.developers.optimizely.com/full-stack/v4.0/docs/optimizelyusercontext-python) and [Forced Decision methods](https://docs.developers.optimizely.com/full-stack/v4.0/docs/forced-decision-methods-python).
+
+### Breaking Changes:
+
+* Support for `Python v3.4` has been dropped as of this release due to a security vulnerability with `PyYAML <v5.4`. ([#366](https://github.com/optimizely/python-sdk/pull/366))
+* We no longer support `Python v2.7, v3.5, and v3.6` including `PyPy` as of this release. ([#377](https://github.com/optimizely/python-sdk/pull/373))
+* We now support `Python v3.7 and above` including `PyPy3`.
+
 ## 3.10.0
 September 16th, 2021
 

optimizely/version.py

@@ -11,5 +11,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-version_info = (3, 10, 0)
+version_info = (4, 0, 0)
 __version__ = '.'.join(str(v) for v in version_info)