update flutter to 3.27.0 & update packages

lib/foundation/comic_source/category.dart

@@ -1,4 +1,4 @@
-part of comic_source;
+part of 'comic_source.dart';
 
 class CategoryData {
   /// The title is displayed in the tab bar.

lib/foundation/comic_source/comic_source.dart

@@ -1,4 +1,4 @@
-library comic_source;
+library;
 
 import 'dart:async';
 import 'dart:collection';

lib/foundation/comic_source/models.dart

@@ -198,9 +198,7 @@ class ComicDetails with HistoryMixin {
         maxPage = json["maxPage"],
         comments = (json["comments"] as List?)
             ?.map((e) => Comment.fromJson(e))
-            .toList(){
-    print(json);
-  }
+            .toList();
 
   Map<String, dynamic> toJson() {
     return {

lib/foundation/comic_source/parser.dart

@@ -90,11 +90,10 @@ class ComicSourceParser {
     var className = line1.split("class")[1].split("extends ComicSource").first;
     className = className.trim();
     JsEngine().runCode("""
-      (() => {
-        $js
+      (() => { $js
         this['temp'] = new $className()
       }).call()
-    """);
+    """, className);
     _name = JsEngine().runCode("this['temp'].name") ??
         (throw ComicSourceParseException('name is required'));
     var key = JsEngine().runCode("this['temp'].key") ??

lib/foundation/history.dart

@@ -42,6 +42,7 @@ class History implements Comic {
 
   int page;
 
+  @override
   String id;
 
   /// readEpisode is a set of episode numbers that have been read.

lib/foundation/widget_utils.dart

@@ -111,4 +111,10 @@ extension StyledText on TextStyle {
   TextStyle get s40 => copyWith(fontSize: 40);
 
   TextStyle withColor(Color? color) => copyWith(color: color);
+}
+
+extension ColorExt on Color {
+  Color toOpacity(double opacity) {
+    return withValues(alpha: opacity);
+  }
 }