# Release v1.0.1 — Portfolio Standard Patch
**Date:** 2026-05-20
**Compare:** `v1.0.0...v1.0.1`
## Summary
Portfolio standard compliance release. **No behavior changes.** Same API,
same performance characteristics, same correctness as `1.0.0`. Users do not
need to change any code to upgrade.
This patch isolates portfolio mechanical changes (REPS, dual licensing,
edition 2024, full lint discipline, `.dev/` framework) from the substantive
performance work planned for `1.1.0`.
The proximate trigger for cutting this patch was a CI failure: `1.0.0`
declared `edition = "2024"` alongside `rust-version = "1.75"`, but edition
2024 requires Rust ≥ 1.85. The Cargo manifest failed to parse on every CI
platform. This release fixes that incompatibility and aligns MSRV with the
declared edition.
## Added
- Dual licensing — `Apache-2.0 OR MIT`. Previously Apache-only.
- `LICENSE` renamed to `LICENSE-APACHE`
- `LICENSE-MIT` added
- `REPS.md` at repo root — canonical Rust Efficiency & Performance Standards
- `.dev/PROMPT.md` — project context, naming conventions, scope
- `.dev/DIRECTIVES.md` — engineering directives (performance, lock-free, REPS)
- `.dev/ROADMAP.md` — full roadmap through `1.2.0`
- `.dev/release/v1.0.1.md` — internal release notes for this patch
- `docs/release-notes/v1.0.1.md` — this file
- `rustfmt.toml`, `clippy.toml` — portfolio standard tooling configuration
## Changed
- `Cargo.toml`: `edition = "2021"` → `"2024"`
- `Cargo.toml`: `rust-version` declared as `"1.85"` (required by edition 2024)
- `Cargo.toml`: `license = "Apache-2.0"` → `"Apache-2.0 OR MIT"`
- `src/lib.rs`: lint configuration upgraded from
`#![deny(warnings)] #![deny(clippy::all)] #![deny(missing_docs)]` to the
full REPS discipline (deny `clippy::unwrap_used`, `clippy::expect_used`,
`clippy::todo`, `clippy::unimplemented`, `clippy::print_stdout`,
`clippy::print_stderr`, `clippy::dbg_macro`,
`clippy::undocumented_unsafe_blocks`, `clippy::missing_safety_doc`; warn
`clippy::pedantic`)
- `README.md`: MSRV badge `1.75+` → `1.85+`; install snippet bumped to
`1.0.1`; dual-license footer
## Removed
- Nothing.
## Fixed
- Cargo manifest parse failure on CI: `rust-version = "1.75"` was
incompatible with `edition = "2024"`. MSRV bumped to `1.85` to match.
## Performance
No changes. Performance characteristics are identical to `1.0.0`:
- `RwLock` contention on every translate call (will be eliminated in `1.1.0`)
- `String` allocation on every translate call (will be eliminated in `1.1.0`)
See `.dev/ROADMAP.md` for the `1.1.0` performance refactor plan.
## Compatibility
- **Source compatible** with `1.0.0` — no `t!` macro changes, no public API
changes.
- **MSRV:** Rust `1.85` (required by edition 2024).
- **Edition:** 2024 (was 2021 in `1.0.0`).
## Migration from 1.0.0
```toml
# Cargo.toml — just bump the version
[dependencies]
lang-lib = "1.0.1"
```
No code changes are required. If your project still pins Rust < 1.85, bump
your toolchain — edition 2024 requires it.
## Next
`1.1.0` — Lock-free reads + zero-allocation hot path. `ArcSwap` replaces
`RwLock` on the translate path; `translate()` returns `Cow<'static, str>`
backed by `Arc<str>` storage. Verified by criterion benchmarks. See
`.dev/ROADMAP.md`.
---
**Full Changelog:** https://github.com/jamesgober/lang-lib/compare/v1.0.0...v1.0.1