look aheead limit defined by user

lib/main.dart

@@ -9,6 +9,7 @@ import 'package:provider/provider.dart';
 
 import 'providers/auth_provider.dart';
 import 'providers/bank_provider.dart';
+import 'providers/preferences_provider.dart';
 import 'providers/sync_provider.dart';
 import 'providers/theme_provider.dart';
 import 'providers/tx_meta_provider.dart';
@@ -96,6 +97,9 @@ class _MyAppState extends State<MyApp> {
       providers: [
         ChangeNotifierProvider<AuthController>.value(value: widget.auth),
         ChangeNotifierProvider(create: (_) => ThemeController(widget.storage)),
+        ChangeNotifierProvider(
+          create: (_) => PreferencesController(widget.storage),
+        ),
         ChangeNotifierProvider<TxMetaController>.value(value: _meta),
         ChangeNotifierProvider<SyncController>.value(value: _sync),
         ChangeNotifierProvider<BankController>.value(value: _bank),