* Add field options to mongo schema metadata
* Add/fix test with fields options
* Add required validation failing test
* Add more tests
* Only set default value if field is undefined
* Fix redis test
* Fix tests
* Test for creating a new class with field options
* Validate default value type
* fix lint (weird)
* Fix lint another way
* Add tests for beforeSave trigger and solve small issue regarding the use of unset in the beforeSave trigger