v0.3.2

• Feature: Improve PHP 8.4+ support by avoiding implicitly nullable types.
  (#19 by @clue)

• Update project structure, homepage and examples.
  Add .gitattributes to exclude dev files from exports.
  (#16, #20, #21 and #22 by @clue)

• Update test suite to use GitHub actions for continuous integration (CI),
  run tests on all PHP versions up to PHP 8.3 and ensure 100% code coverage.
  (#15 by @SimonFrings and #17 and #18 by @clue)