Add changelog and update version number (#446)

Co-authored-by: Paul V Craven <paul.craven@optimizley.com>

CHANGELOG.md -> Added section for version 5.1.0 version.py -> Updated…

… version to 5.1.0 (#441)

changelog, version (#437)

[FSSDK-8583] chore: prepare for 5.0 (#431)

* bump version
* update supported version
* run unit tests on 3.12, pypy 3.8 and 3.9
* fix license

[FSSDK-9107] Update changelog and version for advanced audience targe…

…ting (#425)

* Update changelog and version for advanced audience targeting

* PR fixes

* PR fixe for version

* update date

[FSSDK-8954] chore: prep 4.1.1 (#422)

* [FSSDK-8954] docs: change full stack to feature experimentation (#420)

* [FSSDK-8954] chore: prep for 4.1.1 release (#421)

prep for 4.1.0 release

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 <Mat001@users.noreply.github.com>
Co-authored-by: John Nguyen <john.nguyen@optimizely.com>

chore: Prepare for 3.10.0 Release (#359)

Summary
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-  Prepare for 3.10.0 Release

Chore(release): Prepare for v3.9.1 release (#349)

* chore(release): Preparing for 3.9.1 release

* Bump version to 3.9.1.

* Update changelog to reflect impression event fix and PR.