v0.2.1

Static Linux builds (musl) and macOS builds. Unix only — see the
workflow for why there is no Windows binary.

Verify before use. The attestation is the stronger check — it
proves the archive was built by this repository's release
workflow, from this commit:

gh attestation verify git-remote-sealed-<target>.tar.gz \
  --repo hibariya/git-remote-sealed
shasum -a 256 -c SHA256SUMS --ignore-missing

Then put git-remote-sealed on your PATH. It needs git;
encryption is built in, so no age binary is required.

Push and pull got faster: one fewer network round trip per fetch and push, and large pushes use about half the CPU. No format change, so existing vaults work as is.

Full Changelog: v0.2.0...v0.2.1