Chores: Update example, widen flutter_lints constraints, update versi…

…on and changelog (#46)

Update version and changelog

Update CHANGELOG.md

Update version and changelog

Update version and changelog

Fix alpha value dismissing (#23)

* Remove unused code

* Auto-update iOS file

* Fix alpha value dismissing, refactor color changing methods

* Update version and changelog

Update link to example

Align documentation style (#18)

* Add dots to the end of documentation comments

* Update changelog

* Fix typo in changelog

Release new version