chore: release v0.3.0#47

## 🤖 New release * `lgalloc`: 0.2.2 -> 0.3.0 (⚠️ API breaking changes) ### ⚠️ `lgalloc` breaking changes ``` --- failure constructible_struct_adds_field: externally-constructible struct adds field --- Description: A pub struct constructible with a struct literal has a new pub field. Existing struct literals must be updated to include the new field. ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.29.1/src/lints/constructible_struct_adds_field.ron Failed in: field BackgroundWorkerConfig.clear_bytes in /tmp/.tmpMnurXW/rust-lgalloc/src/lib.rs:769 field SizeClassStats.clear_eager_total in /tmp/.tmpMnurXW/rust-lgalloc/src/lib.rs:995 field SizeClassStats.clear_slow_total in /tmp/.tmpMnurXW/rust-lgalloc/src/lib.rs:997 --- failure struct_pub_field_missing: pub struct's pub field removed or renamed --- Description: A publicly-visible struct has at least one public field that is no longer available under its prior name. It may have been renamed or removed entirely. ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.29.1/src/lints/struct_pub_field_missing.ron Failed in: field batch of struct BackgroundWorkerConfig, previously in file /tmp/.tmpuy8ncE/lgalloc/src/lib.rs:749 ``` <details><summary><i><b>Changelog</b></i></summary><p> <blockquote> ## [0.3.0](https://github.com/antiguru/rust-lgalloc/compare/v0.2.2...v0.3.0) - 2024-03-06 ### Other - Remove memory based on byte size instead of count </blockquote> </p></details> --- This PR was generated with [release-plz](https://github.com/MarcoIeni/release-plz/).