Bump 3.0.3 version

Update pubspec

Update CHANGELOG

Update Example

Support more scroll behavior (#35)

* Fix analyzer

* Support more scroll behavior

Update CHANGELOG.md

Support Null-Safety (#30)

* Support Null-Safety (#28)

Co-authored-by: Minh Đức

* Update CHANGELOG.md (#29)

Co-authored-by: Minh Đức

* Bump 2.0.0-nullsafety.1 version

* Add repository info to pubspec.yaml

* Add publish_to: 'none' to example

* Bump version 2.0.0

Co-authored-by: Minh Đức <ducnm31@onemount.com>

Add repository info to pubspec.yaml

Update CHANGELOG (#24)

Changelog [1.0.3+2] - Unit test comeback (#22)