Zicklag e290a7e29c Implement Sub-App Labels (#2695) ... This is a rather simple but wide change, and it involves adding a new `bevy_app_macros` crate. Let me know if there is a better way to do any of this! --- # Objective - Allow adding and accessing sub-apps by using a label instead of an index ## Solution - Migrate the bevy label implementation and derive code to the `bevy_utils` and `bevy_macro_utils` crates and then add a new `SubAppLabel` trait to the `bevy_app` crate that is used when adding or getting a sub-app from an app.		2021-08-24 00:31:21 +00:00
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src	Implement Sub-App Labels (#2695)	2021-08-24 00:31:21 +00:00
Cargo.toml	Implement Sub-App Labels (#2695)	2021-08-24 00:31:21 +00:00