flutter_local_notifications_platform_interface 4.0.0

A common platform interface for the flutter_local_notifications plugin.

[4.0.0]

• Updated Flutter SDK constraint
• Updated Dart SDK constraint
• Bumped mockito dependency

[3.0.0]

• Migrated to null safety

[2.0.0+1]

• Added more API docs

[2.0.0]

• BREAKING CHANGE renamed RepeatInterval enum values to use lower camel casing
• Bump plugin_platform_interface dependency

[1.0.1]

• Add pendingNotificationRequests()

[1.0.0+1]

• Fix link to repo in pubspec
• Update readme

[1.0.0]

• Initial release of platform interface