Should we drop support for Symfony 3 and 4?

[tarlepp]

Currently this bundle supports Symfony 3 and 4 - https://github.com/mark-gerarts/automapper-plus-bundle/blob/master/composer.json#L20 - which are no longer supported - https://symfony.com/releases - so should we drop those from this bundle too?

[mark-gerarts]

Yes that's a good idea! Feel free to open a PR, otherwise I'll look into this after some time.