v0.9.2

A packaging repair. No source change, no API change. Suite green: 56 tests.

What was wrong

• No sigil: field — sigil deps install refused before doing any work.
• sigil-http and sigil-json were requested from the monorepo after both were extracted into their own repositories.
• Those pins were still on ^0.9.0.
• No dev-dependencies, so the native test harness could not be built and the suite could not run at all.
• Its sigil-oauth dependency was itself unbuildable; this resolves against oauth v0.9.2, released today.

Why 0.9.2 and not 0.1.1

A v0.9.1 tag already exists — a mass mis-tag naming the sigil-stdlib version a migration moved to rather than this package own version. A 0.1.1 tag would sit below it. The only consumer, tube, pins no version.