bevy_atmosphere 0.5 for bevy 0.9

0.5 Change Log

Removed the Atmosphere resource in favor of the Nishita model.
Added the AtmosphereModel resource, which holds an Atmospheric model.
Added the Atmospheric trait and derive macro, which is used to define a model for the pipeline to render.
Added the Nishita model, which provides Rayleigh and Mie scattering.
Added the Gradient model, which provides a simple linear gradient of three colors.
Added the Atmosphere and AtmosphereMut system params, for working with a specific model.
Added AtmosphereSettings.dithering, which allows for enabling/disabling dithering at runtime.
Updated bevy_atmosphere::prelude to include new common types.
Added AtmosphereModelMetadata, which is used to store type data about a model.
Added AddAtmosphereModel, which is used to easily register new models from an App.
Added RegisterAtmosphereModel, which is used to register the model it's implemented for.
Added AtmosphereImageBindGroupLayout, which is used to store a common bind group layout for all models.
Added SkyBoxMaterialKey, which is used to pass the dithering state to the pipeline.

What's Changed

Full Changelog: 0.4.1...0.5.0