v1.0.0-preview.13

What's Changed

💥 Language Breaking Changes

• Allow creating references to nested optionals by @SupunS in #3132

🛠 Improvements

• Improve update tool by @turbolent in #3163
• Improve migration by @turbolent in #3169

🐞 Bug Fixes

• Implicitly track composite reference in attachment iteration by @dsainati1 in #3168

Other Changes

• Merge release/v1.0.0-preview.12 to master by @github-actions in #3167

Full Changelog: v1.0.0-preview.12...v1.0.0-preview.13