release: 1.0.0 (fork baseline)

[ndreno]

Summary

First major release of the barbacane-dev fork. Bumps all four workspace crates from `0.6.1` → `1.0.0`, points their `repository` metadata at this fork, and updates the internal `typify-impl` pin in `typify-macro` to match.

The 1.0.0 jump is warranted by the wire-format change around required fields with intrinsic Rust defaults (PR #4) — payloads that previously omitted empty required fields now render them as `[]` / `{}` / `null`. That's a breaking change for any byte-exact downstream consumer.

CHANGELOG

The long-running "Unreleased changes (barbacane-dev fork)" section is closed out as `1.0.0 (released 2026-05-13)`. A fresh empty Unreleased header sits above it for future work.

README

Rewritten to match the fork's positioning:

• Friendly attribution to oxidecomputer/typify (the 0.6.1 baseline) with a footer acknowledgement.
• Git-dep install instructions for both the library and the `cargo typify` binary, anchored on the `v1.0.0` tag.
• New "What's new vs upstream" section summarising the JSON Schema 2020-12 / external $ref / 2019-09 features and the bug-fix catalogue.
• "Migration notes from 0.6.1" walking through the wire-format change with a before/after table, so consumers know what to expect when they bump.
• Existing technical content (schema → Rust mapping, `x-rust-type` extension, formatting) preserved and slightly tightened.

Next steps after merge

1. Tag the merge commit as `v1.0.0` and push.
2. Consumers can then depend via:
   ```toml
   typify = { git = "https://github.com/barbacane-dev/typify\", tag = "v1.0.0" }
   ```

Test plan

• `cargo fmt --all -- --check`
• `cargo clippy --workspace --all-targets --locked --exclude typify-test -- -D warnings`
• `cargo test --workspace --locked` — all 16 test binaries pass
• `cargo deny check advisories` — passes with the 2-entry ignore list (adler + paste, transitive only)