v4.0.0 - Update PHP to 8.x

What's Changed

• required updates for the checkout be upgrade by @hrowan1 in #3

New Contributors

• @hrowan1 made their first contribution in #3

Full Changelog: v3.0.1...v4.0.0

Restructure bundle

Merge pull request #2 from EncoreLabs/feature/eighpoint-mods

Restructure to typical in typical bundle style

Eightpoint Guzzle V8

Supports v8 of Eightpoint Guzzle

Update readme

Make the readme specific to encorelabs

Bugfixes

Only check headers if they exist