[pazz]

Bumps the version to 1.1.0 and brings CLAUDE.md up to date: the lru_cache.py backport is gone (#78), and main is now the only branch, with the tag 1.0.5 marking the last release before AI-assisted work. It also fixes the broken docs badge in the README: Read the Docs answers GitHub's image proxy with HTTP 429, so the badge now comes from shields.io, which reports the same build status; the docs link moves to readthedocs.io.

After merging, tag the merge commit as 1.1.0 and sign it as for 1.0.5.

Review findings and resolution

Trivial tier: review-correctness, once for the release commits and once for the badge commit.

Release commits:

• Two small backwards-incompatible API changes since 1.0.5 should be in the release notes: CollapsibleTree and the other decorators reject unknown keyword arguments, and NestedTree.depth no longer takes outmost. Fixed in the release notes: the first was already listed under Raise TypeError for unknown keyword arguments to decorators #99, and the second is now listed under Count levels inside subtrees in NestedTree.depth #64.
• .github/workflows/test.yml still lists master under push.branches. Left: this is harmless now that the branch is gone, and it is a CI change that belongs in its own PR if wanted.
• A local master branch still exists in the maintainer's clone. Left: it is local only.
• CLAUDE.md says "about 1500 lines" (now about 1300) and describes expectedFailure markers, of which none are currently in use. Left: still accurate as an approximation and as policy.
• setup.py has no long_description and an old author_email; the README has a typo. Left: these are pre-existing and do not block the release.

Badge commit, review-correctness:

• The first version pointed the badge at app.readthedocs.org on the assumption that GitHub's proxy failed on the redirect. That badge also returned 502 through the proxy; the real cause is Read the Docs rate-limiting the proxy with 429. Fixed: the badge now uses shields.io, which loads through the proxy (checked via gh api markdown), and the commit message gives the correct cause.
• The new docs link urwidtrees.readthedocs.io works, and the old .org host redirects to it. No change needed.

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