brand theme, allot of features, allot of bug fixes

lib/models/delivery_address.dart

@@ -2,41 +2,41 @@ import '../api/types.dart';
 
 class DeliveryAddress implements Serializable {
   final int id;
-  final String line1;
-  final String line2;
-  final String postalCode;
-  final String city;
-  final String subdivision;
-  final String countryCode;
+  final String? line1;
+  final String? line2;
+  final String? postalCode;
+  final String? city;
+  final String? subdivision;
+  final String? countryCode;
   final double? latitude;
   final double? longitude;
-  final String formattedAddress;
+  final String? formattedAddress;
 
   const DeliveryAddress({
     required this.id,
-    required this.line1,
-    required this.line2,
-    required this.postalCode,
-    required this.city,
-    required this.subdivision,
-    required this.countryCode,
+    this.line1,
+    this.line2,
+    this.postalCode,
+    this.city,
+    this.subdivision,
+    this.countryCode,
     this.latitude,
     this.longitude,
-    required this.formattedAddress,
+    this.formattedAddress,
   });
 
   factory DeliveryAddress.fromJson(Map<String, dynamic> json) {
     return DeliveryAddress(
       id: json['id'] as int,
-      line1: json['line1'] as String,
-      line2: json['line2'] as String,
-      postalCode: json['postalCode'] as String,
-      city: json['city'] as String,
-      subdivision: json['subdivision'] as String,
-      countryCode: json['countryCode'] as String,
+      line1: json['line1'] as String?,
+      line2: json['line2'] as String?,
+      postalCode: json['postalCode'] as String?,
+      city: json['city'] as String?,
+      subdivision: json['subdivision'] as String?,
+      countryCode: json['countryCode'] as String?,
       latitude: json['latitude'] as double?,
       longitude: json['longitude'] as double?,
-      formattedAddress: json['formattedAddress'] as String,
+      formattedAddress: json['formattedAddress'] as String?,
     );
   }