1.4.2

Bug fixes

[78b8f02] Require symfony/dotenv in prod too (@javiereguiluz)
[badac21] Use PHPUnit 7.5 in tests (@dmaicher)
[2a83a63] Stop using deprecated event classes (@javiereguiluz)
[3e36a18] Fixed failing tests on systemas where Argon2 hasher is not available (@dmaicher)