Merge branch 'feature/new-ui' of github.com:GetStream/stream-chat-flutter into feat/messg-reply

 Conflicts:

	lib/src/message_list_view.dart

example/lib/advanced_options_page.dart

@@ -350,8 +350,7 @@ class _AdvancedOptionsPageState extends State<AdvancedOptionsPage> {
                                   return MaterialApp(
                                     theme: ThemeData.light(),
                                     darkTheme: ThemeData.dark(),
-                                    //TODO change to system once dark theme is implemented
-                                    themeMode: ThemeMode.light,
+                                    themeMode: ThemeMode.system,
                                     builder: (context, widget) {
                                       return StreamChat(
                                         child: widget,

example/lib/main.dart

@@ -60,7 +60,10 @@ class MyApp extends StatelessWidget {
       debugShowCheckedModeBanner: false,
       theme: ThemeData.light(),
       darkTheme: ThemeData.dark(),
-      themeMode: ThemeMode.system,
+      themeMode:
+          WidgetsBinding.instance.window.platformBrightness == Brightness.light
+              ? ThemeMode.light
+              : ThemeMode.dark,
       onGenerateRoute: AppRoutes.generateRoute,
       initialRoute:
           client.state.user == null ? Routes.CHOOSE_USER : Routes.HOME,