Updatify / Flutter | Release notes

This hotfix release addresses the following issues:

• flutter/66940 - autovalidate property inadvertently removed.
• flutter/66962 - The new –analyze-size flag crashes when used with –split-debug-info
• flutter/66908 - Flutter Activity causing exceptions in some Android versions.
• flutter/66647 - Layout modifications performed by background threads causes exceptions on IOS14.