Upgrade serialize-javascript to v2.1.2 (#61)

* Upgrade serialize-javascript to v2.1.2

* Fix Style CI config

Author: antonkomarev

.styleci.yml

@@ -4,5 +4,4 @@ disabled:
   - concat_without_spaces
   - phpdoc_no_package
   - logical_not_operators_with_successor_space
-  - length_ordered_imports
   - simplified_null_return

public/app.css

@@ -1,4 +1,4 @@
 {
-    "/app.js": "/app.js?id=cd3af0024733bcfd37c4",
-    "/app.css": "/app.css?id=15b592ef7c0a20e53c31"
+    "/app.js": "/app.js?id=222a852582593d9923dc",
+    "/app.css": "/app.css?id=746fe87b4886c701e3b3"
 }