Remove phpunit-bridge specific annotations

The phpunit-bridge has been removed in #3643, so these no longer serve
any purpose. The tests themselves are kept since they check that there
is no crash when using an unknown option, and do not need a phpunit
assertion to do so.

Update releases documentation

`v2.10` is the `current` one now.

Fix branch-alias (master is now 3.0)

Merge all the work done so far for the 3.0.0 release into master

Drop db support for PostgreSQL 9.3 and MariaDB 10.0

Removed Driver::getDatabase() in favor of Connection::getDatabase()

Remove support for sharding and the Azure platform

Make sure that (VAR)CHAR column length is specified in characters, not bytes

Removed some unused code bits

Enable phpstan in DBAL tests

Get rid of hard-coded default values of maximum field lengths

Getting rid of the column name index

Remove LoggerChain::addLogger

Enforce parameter and return value types in the codebase

Enforced parameter and return value types in event-related classes

Add proper types to Doctrine\DBAL\Query namespace.

Add proper types to root Doctrine\DBAL namespace.

Add proper types to Doctrine\DBAL\Id namespace.

Add proper types to the Doctrine\DBAL\Sharding namespace.

Add proper types to Doctrine\DBAL\Tools namespace.