Adding sanity checking to class instantiation in `\core\Object::_instance()`.
Adding sanity checking to class instantiation in `\core\Object::_instance()`.

muyehub/lithium,UnionOfRAD/lithium,UnionOfRAD/framework,SensCritique/lithium,jails/lithium,mehlah/lithium,UnionOfRAD/lithium,pixelcog/lithium,davidpersson/lithium,jails/lithium,graphis/lithium,davidpersson/lithium,mehlah/lithium,qoqa/lithium,m4rcsch/lithium-core-library,SensCritique/lithium,wbeater/lithium,pixelcog/lithium,wbeater/lithium,graphis/lithium,whowgames/lithium,qoqa/lithium,m4rcsch/li3_framework,m4rcsch/lithium-core-library,muyehub/lithium,datachand/lithium,whowgames/lithium,datachand/lithium