Signify Creator v0.3.0

What's Changed

• Add multi-tenant application control plane by @ithealthtech in #5
• Add guided provider onboarding by @ithealthtech in #6
• Update CI actions for Node 24 by @ithealthtech in #7
• Add out-of-box Node.js installer by @ithealthtech in #8
• Prepare Signify Creator 0.3.0-rc.2 by @ithealthtech in #9
• Detect hosting paths during setup by @ithealthtech in #10
• Prepare Signify Creator 0.3.0-rc.3 by @ithealthtech in #11
• Revalidate callbacks and responsive release by @ithealthtech in #12
• Release Signify Creator 0.3.0 by @ithealthtech in #13

Full Changelog: v0.2.0...v0.3.0