v0.2.0

Breaking release with correctness fixes, faster lookups, and new feature flags.

Breaking changes

• QuoteTag is now QuoteStyle; tag codes use NonZeroU8 with unified tag/from_tag naming, so a reserved-zero tag is unrepresentable.
• IdentStr::from_raw and Key::from_raw are now from_unquoted.
• Quote delimiter conversions return the new InvalidQuote error instead of ().
• The Turkic policies moved behind the new unicode-turkic feature (previously part of unicode).
• Malformed quoted sources whose body is a single unescaped closing delimiter (for example """ or []]) are now kept as raw text instead of parsing as quoted.
• Short Box<str> inputs to Key are stored inline instead of reusing the allocation.

Fixed

• ASCII hashing now issues identically chunked writes for policy-equal text, so HashMaps built on chunk-sensitive hashers (FxHash, aHash) can no longer miss lookups for identifiers longer than 64 bytes.

Added

• KeyStr: borrowed lookup text for allocation-free HashMap/BTreeMap queries, with Borrow/ToOwned wiring to Key.
• policy::Exact: byte-exact, case-sensitive matching.
• Key::from_source::<Q> for custom quote styles, and inline (SSO) storage for short keys.
• serde feature: IdentStr round-trips its quoted source form; Key serializes its lookup text.
• PartialOrd against str, &str, and String for IdentStr and Key.
• Doctests across the public API, a Miri CI job, and static auto-trait assertions.

Performance

• Unicode policies gain byte-equality fast paths and normalize keys directly from borrowed input.
• Turkic folding keeps borrowed case-fold results and skips normalization of already-NFC input.
• String inputs spill to Arc/Rc storage with a single copy.

docs.rs now builds with all features and per-feature badges.