Former-commit-id: 98b76695cca904c55c7333801c3cdf693da15086
EntityHandle are no longer required to pass Entity as arguments World::CreateEntity() now returns a const EntityHandle& Former-commit-id: 6fc53ce5759a2a508094bdc61b4471f13f0844ec
It's now officially an ECS, yay! Former-commit-id: e2aacaa5c9fd362921cf3d064e346d11f942bd59