[2.0.0] - 05/30/2021 Updates the lib for null safety (Chrystoffer Kugler Horochovec) [1.1.1] - 01/17/2019 Fix position of flexibleSpace [1.1.0] - 01/17/2019 Fix gesture reaction issue for overlapContent (flutter/flutter#19445) [1.0.0] - 12/29/2018 Initial release.