* tests: be more systematic when testing discrete column types
Still not covering all due to SQLite limitation
* tests: relations of models
* tests: model in another namespace gets correctly qualified
* tests: cover SoftDeletes trait
* tests: cover some variants of getter
* tests: add abstract class for all database related tests
* tests: add abstract class for all ModelsCommand related tests
* tests: add GenerateBasicPhpdoc test
* tests: add CustomDate test
* tests: remove MITM abstract TestCaseDatabase, not useful here
* tests: skip new ModelsCommand test on Laravel < 6
* tests: remove CarbonImmutable checked
Since we decided to skip for Laravel < 6.0 anyway, it's always present
Markus Podar