Future of this bundle and a v5 release?

This bundle was created more than 10 years ago, when Symfony lacked some methods to ease testing.

Fixtures loading was moved to another bundle: https://github.com/liip/LiipFunctionalTestBundle/blob/3.x/UPGRADE-3.0.md

Now most of these methods can be replaced by Symfony methods (checking HTTP code, login, etc.), so many methods may be removed from this bundle.

CI must install `doctrine/annotations` to avoid an issue:

- GH-653

So, if the next major release remove all the deprecated functions and the `QueryCounter`, what will remain?

We should check the docs:

- https://github.com/liip/LiipFunctionalTestBundle/blob/4.15.0/doc/basic.md
- https://github.com/liip/LiipFunctionalTestBundle/blob/4.15.0/doc/command.md does Symfony have helpers to test commands?
- https://github.com/liip/LiipFunctionalTestBundle/blob/4.15.0/doc/logged.md
- https://github.com/liip/LiipFunctionalTestBundle/blob/4.15.0/doc/query.md consider removing it
- https://github.com/liip/LiipFunctionalTestBundle/blob/4.15.0/doc/fastest.md I should try it in a project to see if this still works

Then summarize what can be removed or kept, and see if it’s worth releasing a new version if it only contain a few methods.

Review doc/basic.md, doc/command.md, doc/logged.md, doc/query.md, and doc/fastest.md, then inspect the deprecated functions, QueryCounter, and GH-653 context. Compare the documented helpers with Symfony's available testing methods and verify whether the fastest approach still works in a project. Done means a summary of what can be removed or kept and a reasoned recommendation on whether a v5 release is worthwhile.

Written by the indexing model from the issue text.