Alpha3 release of AppIntro 6.x

Please note that this versions is considered unstable and contains
several breaking changes.

Release notes will be published with the upcoming release.

Alpha2 release of AppIntro 6.x

Please note that this versions is considered unstable and contains
several breaking changes.

Release notes will be published with the upcoming release.

Alpha1 release of AppIntro 6.x

Please note that this versions is considered unstable and contains
several breaking changes.

Release notes will be published with the upcoming release.

Mirror the v5.1.0 tag to do not break semantic versioning

Mirror the v5.0.1 tag to do not break semantic versioning

Mirror the v5.0.0 tag to do not break semantic versioning

Mirror the v4.2.3 tag to do not break semantic versioning

Release new AppIntro version.

Bump version number

Target SDK 28