Maintenance release
- Allow Symfony 4 components #86 thanks @jakzal
- Add extension requirements #87 thanks @jakzal
- Version bump and initial cleanups #88 thanks @jakzal
- Fix a problem discovered by scrutinizer #89 thanks @jakzal
- Update link for Selenium Page Objects, old one was dead #94 thanks @ElijahLynn
- Update the spec to work with newer versions of the Symfony container #95 thanks @jakzal
- Save current and expected URL in verifyUrl() for use in exception message #101 thanks @phil-davis
- Build on PHP 7.2 #104 thanks @jakzal
- Update PageObjectArgumentResolver.php #106 thanks @DonCallisto
- Enhancement: Keep packages sorted in composer.json #116 thanks @localheinz
- Fix: Use appropriate class name in example #115 thanks @localheinz
- Fix: Remove examples for PHP 5 #117 thanks @localheinz
- Enhancement: Normalize composer.json #118 thanks @localheinz
- Run tests on php 7.3 #119 thanks @jakzal
- unmaskUrl method: private to protected #99 thanks @nietzscheson
- Fix: Remove return type annotation #120 thanks @localheinz
- Support latest Symfony 4.2.x #121 thanks @localheinz
- Bump dependency versions #122 thanks @jakzal