Doctrine ORM 3.x & DBAL 4.x support

[xificurk]

Configuration::getMetadataCacheImpl() has been dropped in ORM 3.x, but a replacement in the form of Configuration::getMetadataCache() is available since ORM 2.9.
2.9 has been released in May 2019, IMO it's not worth trying to keep compatibility with ORM <2.9.

[hrach]

LGTM but let's see CI run.

[hrach]

ok, so doctrine run fails. could you fix that please?

[xificurk]

Should be fixed now - reverted bool escaping change.

[hrach]

If I see correctly, Doctrine Orm 2.9 was released in 2021-05. If @JanTvrdik does not object, I'm going to merge this.

[JanTvrdik]

You need to add this also to https://github.com/nextras/migrations/tree/master/tests/matrix/dbal, otherwise it's not really tested.

[xificurk]

DBAL 4.x integration test config added.

@JanTvrdik What are your thought on the doctrine/orm min supported version bump? Maybe I should add conflict with older versions into composer.json?

[JanTvrdik]

What are your thought on the doctrine/orm min supported version bump?

That's ok.

Maybe I should add conflict with older versions into composer.json?

You can't really have a conflict with optional dependency, because the conflict will prevent install even if the optional feature is not used.