Merge branch 'feature_easywechat' into 'master'

add easywechat

See merge request bp/php_utils!4

composer.json

@@ -10,7 +10,8 @@
         "ext-exif": "*",
         "ext-fileinfo": "*",
         "ext-ctype": "*",
-        "elasticsearch/elasticsearch": "~7.0"
+        "elasticsearch/elasticsearch": "~7.0",
+        "overtrue/wechat": "^4.2"
     },
     "autoload": {
         "psr-4": {