chore(release): prepare v0.1.0 — Cargo metadata, CHANGELOG, README polish

- Cargo.toml: add `repository`, `homepage`, `documentation`,
  `keywords`, `categories`, `authors`, and `rust-version = "1.85"`
  (the version that stabilized edition 2024).
- CHANGELOG.md: new file in Keep-a-Changelog format with the full
  v0.1.0 inventory (core, traits, pareto utilities, operators,
  algorithms, metrics, examples, and the `serde`/`parallel` features).
- README.md: add crates.io / docs.rs / license badges and a Changelog
  link.

Pre-release verification (all clean):
- cargo build (default + --features parallel)
- cargo test (default, parallel, serde, --all-features) — 111 lib +
  3 doc tests pass under each.
- cargo clippy --all-targets --all-features -- -D warnings
- cargo doc --no-deps
- cargo package --no-verify → 57 files, 261 KB

Cargo.toml

@@ -2,9 +2,16 @@
 name = "heuropt"
 version = "0.1.0"
 edition = "2024"
+rust-version = "1.85"
+authors = ["Stephen Waits <steve@waits.net>"]
 description = "A practical Rust toolkit for heuristic single-, multi-, and many-objective optimization."
 license = "MIT"
 readme = "README.md"
+repository = "https://github.com/swaits/heuropt"
+homepage = "https://github.com/swaits/heuropt"
+documentation = "https://docs.rs/heuropt"
+keywords = ["optimization", "evolutionary", "nsga", "pareto", "moead"]
+categories = ["algorithms", "science", "mathematics", "simulation"]
 
 [features]
 default = []