use function in config for emojiSet to keep Config being const and up…

…date Readme

README.md

@@ -236,11 +236,11 @@ Config(
     locale: const Locale("ja"),
 )    
 ```
-In case you want to support additional languages, you need to create a copy of a emoji set file (see /lib/locales), transalte it and adjust the config for `emojiSet`:
+In case you want to support additional languages, you need to create a copy of a emoji set file (see /lib/locales), translate it (optional use `/automation/create_emoji_set.sh` to help you) and adjust the config for `emojiSet`:
 ```dart
 EmojiPicker(
     config: Config(
-         emojiSet: _getEmojiLocale(locale),
+         emojiSet: _getEmojiLocale,
     ),
 )
 
@@ -257,6 +257,15 @@ List<CategoryEmoji> _getEmojiLocale(String locale) {
 ```
 Feel free to create an issue if you think a specific language should be supported by default. We keep the languages limited for now to avoid the package size growing unnecesserily large.
 
+In case you want to support only a single language you can just return the same EmojiSet for all locales.
+```
+List<CategoryEmoji> _getEmojiLocale(String locale) {
+    return emojiSetEnglish;
+}
+```
+Using a single EmojiSet will reduce the package size by about 2 MB.
+If you prefer to use the old EmojiSet (version 3 and below), you can return `defaultEmojiSet`. 
+
 ## Extended usage with EmojiPickerUtils
 
 Find usage example [here](https://github.com/Fintasys/emoji_picker_flutter/blob/master/example/lib/main_key.dart)

lib/src/config.dart

@@ -1,4 +1,5 @@
 import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
+import 'package:emoji_picker_flutter/locales/default_emoji_set_locale.dart';
 import 'package:flutter/material.dart';
 
 /// Number of skin tone icons
@@ -10,7 +11,7 @@ class Config {
   const Config({
     this.height = 256,
     this.checkPlatformCompatibility = true,
-    this.emojiSet,
+    this.emojiSet = getDefaultEmojiLocale,
     this.locale = const Locale('en'),
     this.emojiTextStyle,
     this.customBackspaceIcon,
@@ -34,7 +35,7 @@ class Config {
   /// default_emoji_set_locale.dart).
   /// If not provided, the default emoji set will be used based on the
   /// locales that are available in the package.
-  final List<CategoryEmoji>? emojiSet;
+  final List<CategoryEmoji> Function(Locale locale)? emojiSet;
 
   /// Locale to choose the fitting language for the emoji set
   /// This will affect the emoji search results

lib/src/emoji_picker.dart

@@ -366,8 +366,8 @@ class EmojiPickerState extends State<EmojiPicker> {
       final recentEmojiMap = _recentEmoji.map((e) => e.emoji).toList();
       _categoryEmoji.add(CategoryEmoji(Category.RECENT, recentEmojiMap));
     }
-    final data =
-        widget.config.emojiSet ?? getDefaultEmojiLocale(widget.config.locale);
+    final data = widget.config.emojiSet?.call(widget.config.locale) ??
+        getDefaultEmojiLocale(widget.config.locale);
     _categoryEmoji.addAll(widget.config.checkPlatformCompatibility
         ? await _emojiPickerInternalUtils.filterUnsupported(data)
         : data);