Guzzle 8 is now supported alongside Guzzle 6 and 7.
Guzzle 8 removes RequestException::getResponse(), keeps the casing of the HTTP method you pass in, and only accepts string header values. All three are handled, so webhooks keep going out as POST and useTimestamp() keeps working. The test matrix now runs against both Guzzle 7 and 8.
What's Changed
New Contributors
Full Changelog: 3.10.0...3.11.0