Release Chemvas 0.6.0

[dhsohn]

Motivation

I am cutting 0.6.0 so the fixes merged in #191 and the import-boundary changes
since 0.5.1 are available from PyPI. A minor release is appropriate because
twelve module import paths moved without compatibility shims and the reviewed-
precomplex freshness basis now requires older reviews to be regenerated.

Changes

• Bump chemvas.__version__ from 0.5.1 to 0.6.0.
• Freeze the audited Unreleased notes as 0.6.0 - 2026-08-30 and start a fresh
  empty Unreleased section.
• Record all seven package-root API additions, the twelve moved import paths,
  the removed forwarding APIs, and the reviewed-precomplex basis transition.
• Update the changelog comparison links for 0.6.0.

Verification

• make check — Ruff, formatting, mypy, and all 303 test files passed on the
  final release cut.
• Built the 0.6.0 wheel and sdist in isolation; verify_dist.py and
  twine check both passed.
• Installed the wheel in a fresh Python 3.13 environment outside the source
  tree; the console script and package metadata both reported 0.6.0 and the
  module loaded from that environment's site-packages.
• Audited the changelog in both directions against v0.5.1..HEAD, including
  public API additions, import moves, removed methods, document version, and
  reviewed-precomplex freshness behavior.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-30T11:56:40.326199Z	30dff4a	PR opened

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