[Update] Update the commercial version.

android/build.gradle

@@ -52,5 +52,5 @@ android {
 dependencies {
     // 本地依赖，现将aar复制到libs/io/openim/core-sdk/0.0.1/ 下，命名core-sdk-0.0.1.aar
 //    implementation 'io.openim:core-sdk:0.0.1@aar'
-    implementation 'io.openim:core-sdk:3.0.1-e+1@aar'
+    implementation 'io.openim:core-sdk:3.1.0-e@aar'
 }

ios/flutter_openim_sdk.podspec

@@ -17,7 +17,7 @@ A new Flutter project.
   s.dependency 'Flutter'
   s.platform = :ios, '11.0'
 
-  s.dependency 'OpenIMSDKCore','3.0.1-e'
+  s.dependency 'OpenIMSDKCore','3.1.0-e'
   s.static_framework = true
   # s.vendored_frameworks = 'Framework/*.framework'
   # Flutter.framework does not contain a i386 slice.

lib/src/openim.dart

@@ -2,7 +2,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
 class OpenIM {
-  static const version = '3.0.0';
+  static const version = '3.1.0';
 
   static const _channel = const MethodChannel('flutter_openim_sdk');