A week of symfony #584 (5-11 March 2018)

This week, Symfony 2.7.43, 2.8.36, 3.4.6 and 4.0.6 maintenance versions were published. Meanwhile, Symfony development activity focused on fixing minor bugs. Lastly, the “feature freeze” period for the upcoming Symfony 4.1 version starts in just 3 weeks, so we need your help to review issues and finish pull requests. Symfony development highlights 2.7 changelog: 76c1251:…