BREAKING CHANGE:

• feat: convert PatchApp to instance-based lifecycle-aware updater.
• Use dart ^3.7.0 and flutter >=3.29.0.

Update docs and README.

MIGRATION GUIDE:

Old version:

await PatchApp.instance.checkAndUpdate(
    confirmDialog: () => patchAppConfirmationDialog(context: context),
    minInterval: const Duration(minutes: 15),
    onError: (error, stack) {
      debugPrint("Update failed: $error");
    },
);

New version:

PatchApp(
  confirmDialog: (context) => patchAppConfirmationDialog(context: context),
  minInterval: const Duration(minutes: 15),
  onError: (error, stack) => debugPrint('Update failed: $error'),
).checkAndUpdate(context);