flutter_cache 0.0.7

Changelog

• Can set optional value if key not exists in load()
• Import package method instead of Cache class.
• Upgrade to dependencies to Flutter 2
• Update Test from flutter_test to test package

Breaking Changes

• Import package method instead of Cache class.
  • changed from import 'package:flutter_cache/flutter_cache.dart'; to import 'package:flutter_cache/flutter_cache.dart' as cache;