TODO.md - game - A "game" written from scratch in Rust

[x] Support for multiple textures
[x] Non-hardcoded projection settings
[x] Model importing
[x] Multiple light sources
[ ] Fix the ECS member crate "extension" example
[ ] Make ECS framework use archetypes
[ ] Add support for entity tags in ECS framework
[ ] Add support for adding components to entities at runtime in ECS framework
[ ] Add support for removing components from entities at runtime in ECS framework
[ ] Add support for entity relationships in ECS framework
[ ] Add component events (removal & addition) in ECS framework
[ ] Audio
[ ] Transparent/translucent models
[ ] Animations
[ ] Physics
[ ] Rotation (using quaternions)