Bumps plugin.json, package.json, the README badge and the three skill
frontmatters, because release-plugin.mjs blocks on a plugin.json that does not
already stand at the target version.
Also closes a gap this release would otherwise have inherited: v0.10.0 shipped
without a CHANGELOG section, and the next-cost fix sat under [Unreleased] even
though it is inside v0.9.0..v0.10.0. Labelling that block 0.11.0 would have
made a second wrong claim, so 0.10.0 now has its own section, written from the
commits in the tag rather than from memory.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016iJoZVmU2guTEZcMghk88z
Kjell Tore Guttormsen
6735298752