PHP 8.2 Support, Updated Spec Documentation, and Bugfixes

What's Changed

• Fixed broken CI by @GrahamCampbell in #44
• Link to v1.0.2 spec by @GrahamCampbell in #41
• Fixed everything that broke after master was renamed to main by @GrahamCampbell in #42
• Support PHP 8.2 by @GrahamCampbell in #43

Full Changelog: v1.0.1...v1.0.2