Start SDK v3.0.6

A patch release: manifests, notifications and container addresses type-check as written for 3.0.4, and action results spell out every field.

Highlights

• Manifests and notifications take what they took in 3.0.4. Dockerfile images may omit workdir, and device filters and notifications may omit their optional fields.
• getContainerIp for the service's own container returns a string.

Full changelog for v3.0.6 — every change in this release.

Important

• Every action result value sets every field. A single value sets copyable, qr, masked and launchable; a multiline value sets copyable, qr, masked and filename (null for no download); a group member sets description (null for none). Add launchable: false wherever a result has none.