Update CHANGELOG.md

Update changelog and version.

Fix for `name` 400s due to `ngrok`'s new Agent (#157)

* Add fix for ngrok's new 400 behavior, pending response from support if it was intended.

* Fix test

* Use -api prefix.

* Prep for merge and release.

* Update __init__.py

Bump version to 7.3.0 for removal of Python 3.8 support.

Add support for s390x and ppc64 archs.

Version bump.

Bump version.

Bump version for release.

Bump version for release.

Bump version to 7.2.7.