v1.1.0

• Feature: Support authentication with URL-encoded special characters.
  (#66 by @clue)

  $user = 'he:llo';
  $pass = 'p@ss';
  $promise = $factory->createClient(
      rawurlencode($user) . ':' . rawurlencode($pass) . '@localhost'
  );

• Minor documentation improvements and add support / sponsorship info.
  (#58 by @clue)

• Improve test suite and add .gitattributes to exclude dev files from exports.
  Prepare PHP 8 support, update to PHPUnit 9 and simplify test matrix.
  (#57 and #59 by @clue and #61 and #65 by @SimonFrings)