bring over the merge query constants from d8
Copy over the destructable interface, but don't implement it yet
Implement specific factory overrides to not require the symfony container interface
fix the KV merge query
Add integration tests for KV
Make it possible to reset the internal state of the container for tests purposes
explain which services are available
add the symfony DIC interface
register the symfony DIC component in the composer.json
implement container::set container::has and container::setParameter
Test CachedContainerBuilder::reset
don't hack DatabaseStorageExpirable but override it, in order to not require calling ::keys
ignore a bit more code
add missing scope interface
introduce a concept of a frozen container and fixes some tests
Merge branch '7.x-1.x' into KV-tests
Merge branch '7.x-1.x' into symfony-container-interface
fix the test coverage
use static:: not self::
document frozen