CHANGELOG [Unreleased] omits breaking #64 and behavior change #66

[MasterOfBinary]

CHANGELOG.md's [Unreleased] section is empty, but master has landed:

• feat(batch)!: single-use Batch + Go returns (<-chan error, error); inline item IDs #64 (BREAKING): single-use Batch (ErrBatchUsed), Go now returns (<-chan error, error), inline item IDs (incl. IDBufferSize removal), timer-leak fix.
• fix: preserve errored items through Filter to prevent silent error loss #66: processor.Filter now preserves errored items instead of dropping them.

A user upgrading past v0.5.0 finds no record of an API break that won't compile. This violates the project's own docs rule in CLAUDE.md ("when you change the public API, update the docs in the same change: … CHANGELOG.md").

Fix: backfill [Unreleased] with both entries (plus #69's example changes if we're being thorough).

Found in the 2026-07-10 full-repo review.