Refactoring model initialization, and making class-defined schemas inheritable.
Refactoring model initialization, and making class-defined schemas inheritable.

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