chore: dual-license MIT OR Apache-2.0

The Rust ecosystem convention, and what kickscore, xy and saphyr already use — kickscore being the closest sibling to this crate. LICENSE-APACHE is the canonical 201-line Apache-2.0 text with the appendix left as the unfilled template, which is the form Rust crates ship. LICENSE-MIT carries the copyright line. Both are picked up by cargo automatically and appear in the packaged crate. This also unblocks the release workflow. `cargo publish` does not check the license field when the target is an alternative registry, but cargo-release does, and refuses outright: error: trueskill-tt is missing the following fields: license || license-file --no-verify does not bypass it. So `just release` was inert without this, whatever cargo publish alone would have accepted. README gains the conventional dual-license section and the contribution note that dedicates inbound contributions under the same terms. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T5SYDExxL4vZgvunrcNSMc
2026-08-27 17:35:42 +02:00
parent 56ff01074f
commit b73cf0145a
5 changed files with 292 additions and 11 deletions
@@ -2,6 +2,56 @@
 All notable changes to this project will be documented in this file.
 ## 0.2.0 - 2026-08-27
 ### Breaking Changes
 - refactor!: remove the inert online flag
 ### Bug Fixes
 - fix: reject ties without draw probability; never report NaN as converged
 - fix(quality): support any number of rating groups
 - fix(evidence): accumulate in log space and floor the per-link value
 - fix(history): stop reprocessing the slice that was just appended to
 - fix(rayon): remove the aliasing unsafe from the parallel sweep
 - fix: close out four small issues and pin #27's repro
 ### Documentation
 - docs: refresh README and CLAUDE.md; add ingest benchmark
 - docs: spec for filtered (forward-only) estimates
 - docs: implementation plan for filtered estimates
 - docs: state filtered accessor cost and evidence semantics precisely
 - docs(cargo): correct the licence note — kellnr does not require one
 ### Features
 - feat: add filtered_log_evidence
 - feat: add filtered learning curves
 ### Miscellaneous Tasks
 - chore: add CI, crate metadata, and crate-level documentation
 - chore: target releases at the private kellnr registry
 - chore: keep the 48 MB ATP dataset out of the published crate
 ### Performance
 - perf(gaussian): drop the sqrt round-trip from variance-space operations
 ### Refactor
 - refactor: unify convergence defaults, validate builders, clear dead code
 ### Styling
 - style: make NaN rejection explicit in score_sigma validation
 ### Testing
 - test: pin the invariants that make filtered estimates trustworthy
 ## 0.1.2 - 2026-06-12
 ### Bug Fixes
@@ -32,6 +82,10 @@ All notable changes to this project will be documented in this file.
 - feat(outcome): per-event score_sigma override on Outcome::Scored
 - feat(event_builder): expose scores_with_sigma fluent method
 ### Miscellaneous Tasks
 - chore: Release trueskill-tt version 0.1.2
 ### Refactor
 - refactor: dedupe Game::likelihoods and likelihoods_scored via run_chain
@@ -13,17 +13,7 @@ publish = ["kellnr"]
 readme = "README.md"
 keywords = ["trueskill", "rating", "bayesian", "elo", "skill"]
 categories = ["algorithms", "science", "game-development"]
-# Deliberately unlicensed for now — not an oversight.
+license = "MIT OR Apache-2.0"
 #
 # Correcting what this note used to claim: `cargo publish` does NOT reject a
 # crate without `license`/`license-file` when the target is an alternative
 # registry. Only crates.io enforces it. Verified by `cargo publish --dry-run`
 # against kellnr, which packages and verifies cleanly as-is.
 #
 # The consequence is legal, not mechanical: with no stated terms the source is
 # all-rights-reserved by default. The Rust convention when one is wanted is
 # `license = "MIT OR Apache-2.0"` plus matching LICENSE-MIT / LICENSE-APACHE
 # files.
 # `examples/atp.csv` is a 48 MB tennis dataset — 99% of the packaged crate,
 # for a library whose source is 312 KB. `examples/atp.rs` opens it by
 # relative path at runtime, so excluding the data still compiles; the
@@ -0,0 +1,201 @@
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@@ -0,0 +1,19 @@
 Copyright (c) 2026 Anders Olsson
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
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 THE SOFTWARE.
@@ -101,3 +101,20 @@ h.converge().unwrap();
 - [x] Add Observer (`Observer` / `NullObserver`)
 - [x] Benchmark the inference loop (`benches/batch.rs`, `benches/history_converge.rs`, `benches/ingest.rs`)
 - [ ] Cross-check `quality()` against [sublee/trueskill](https://github.com/sublee/trueskill/tree/master) — N-group support works and is covered by invariants, but no reference values are asserted
 ## License
 Licensed under either of
 - Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or
  <http://www.apache.org/licenses/LICENSE-2.0>)
 - MIT license ([LICENSE-MIT](LICENSE-MIT) or
  <http://opensource.org/licenses/MIT>)
 at your option.
 ### Contribution
 Unless you explicitly state otherwise, any contribution intentionally submitted
 for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
 dual licensed as above, without any additional terms or conditions.