Updated changelog

Author: oisyn

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [PR#998](https://github.com/EmbarkStudios/rust-gpu/pull/998) added `extra_arg()` SpirvBuilder API to be able to set codegen args otherwise not supported by the API (for example, to set `--spirv-passes`).
 
 ### Changed 🛠
+- [PR#999](https://github.com/EmbarkStudios/rust-gpu/pull/999) Made the [`SPIR-🇹` shader IR framework](https://github.com/EmbarkStudios/spirt) the default. You can opt-out using `--no-spirt` codegen arg.
 - [PR#992](https://github.com/EmbarkStudios/rust-gpu/pull/992) renamed `rust-toolchain` to `rust-toolchain.toml`.
 - [PR#991](https://github.com/EmbarkStudios/rust-gpu/pull/991) updated toolchain to `nightly-2023-01-21`.
 - [PR#990](https://github.com/EmbarkStudios/rust-gpu/pull/990) removed return type inference from `Image` API and made `glam` usage mandatory.