…sing AllTests approach. Fixed global state problem in tests that was caused by EventManager being reused. Significantly enhanced error message about cascade persist
…f inheritance hierachy and entities not mapped in discriminator map.
…ore not allowing a comma, which is needed when multiple columns need to be specified. (I've checked the XmlDriver code for this) It should be the same as the `columns` attribute of the `unique-constraints` type, namely `xs:string`.
…n Symfony Console