Update 1.3.0

[HyperCodec]

small changes, namely fixing doc feature badges on docs.rs, passing &mut self to a lot of the traits for objects owned by GeneticSim, and adding a QoL observer layering API.

[HyperCodec]

need to test the docs part before I actually release.

[Copilot]

Pull request overview

This PR updates the genetic-rs workspace from version 1.2.2 to 1.3.0. It fixes docs.rs feature badge rendering, changes trait method receivers from &self to &mut self for Eliminator, Repopulator, and FitnessObserver, and adds a LayeredObserver QoL API for composing multiple FitnessObserver implementations.

Changes:

• &self → &mut self for Eliminator::eliminate, Repopulator::repopulate, and FitnessObserver::observe traits and all built-in implementations.
• New LayeredObserver type and FitnessObserver::layer combinator method for sequentially chaining observers, with integration tests.
• docs.rs configuration fixes: switched from per-feature features = [...] to all-features = true, added docsrs cfg support in all three crates, and removed all #[cfg_attr(docsrs, doc(cfg(...)))] annotations.

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Cargo.toml	Version bump to 1.3.0 workspace-wide
Cargo.lock	Updated lock file reflecting version bump
genetic-rs/src/lib.rs	Added #![cfg_attr(docsrs, feature(doc_cfg))]
genetic-rs/Cargo.toml	Added [package.metadata.docs.rs] config and updated docsrs in unexpected_cfgs
genetic-rs-macros/Cargo.toml	Added [package.metadata.docs.rs], [lints.rust], updated dependency version
genetic-rs-common/Cargo.toml	Changed to all-features = true for docs.rs, added [lints.rust]
genetic-rs-common/src/lib.rs	Changed Eliminator and Repopulator trait methods to &mut self; removed feature-gated cfg_attr(docsrs, ...) annotations
genetic-rs-common/src/builtin/eliminator.rs	Changed FitnessObserver::observe to &mut self; added LayeredObserver struct and layer combinator; updated all eliminate impls; removed doc(cfg(...)) annotations
genetic-rs-common/src/builtin/repopulator.rs	Updated all repopulate impls to &mut self; removed doc(cfg(...)) annotations
genetic-rs/tests/eliminator.rs	New integration tests for LayeredObserver composability

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