Switches from the MySQL to the MariaDB driver as default.

We only supply a MariaDB driver as the MySQL 5.x driver
seems to have a security issue and 8.x brings some problems
along.

dev-19.5

Shows Cascading Deletion only to Admins

dev-19.4: Merge pull request #369 from scireum/version-bump

bump version

Provide a method to detect changes on an entity using a custom function

dev-19.3

Merge pull request #368 from scireum/jmu/SE-9960-is-any-mapping-chang…

dev-19.2

Bumps sirius-kernel dev-19.6 -> dev-19.7

Logs more than 256 characters of the ES request content

Merge pull request #367 from scireum/sbi/OX-6086

Logs more than 256 characters of the ES request content

MultiLanguageString: Prevents a NPE when trying to access fallback on uninitialized data

Merge pull request #365 from scireum/sbi/MultiLangFallbackFix

Prevents a NPE when trying to access fallback on uninitialized multi lang data

dev-19.0

Breaking: fieldLookUpCache now transforms the value inside of the value. calls on String field won't need any adjustments, other field types will.

Uses a proper return type.

Returnin a protected class otherwise prohibits calling
any methods on it, even the inherited public ones.
Also this is rather an implementation details and
returning the base type is the better option.

Adds some boilerplate constructors.

Merge pull request #360 from scireum/aha/constructor-boilerplate

Makes two constructors accept a Stream instead of an array or list.