Miabi v1.4.0-beta.1

What's Changed

• fix(release): serve the installers from the repo, not from release as… by @jkaninda in #13
• feat(labels): give the Miabi stack its own platform identity by @jkaninda in #14
• feat(cli): miabi install/update — Miabi owns its own stack by @jkaninda in #15
• docs: update installation and configuration reference, update install.sh by @jkaninda in #16

Full Changelog: v1.3.0...v1.4.0-beta.1