Update version to 0.4.6

Author: Oliver Pulges

lib/wysihtml5x/rails/version.rb

@@ -1,5 +1,5 @@
 module Wysihtml5x
   module Rails
-    VERSION = "0.4.5"
+    VERSION = "0.4.6"
   end
 end

vendor/assets/javascripts/parser_rules/advanced_unwrap.js

@@ -77,6 +77,12 @@ var wysihtml5ParserRules = {
 
 
     "type_definitions": {
+
+        "visible_content_object": {
+            "methods": {
+                "has_visible_contet": 1
+            }
+        },
 
         "alignment_object": {
             "classes": {
@@ -344,7 +350,7 @@ var wysihtml5ParserRules = {
 
         "div": {
             "one_of_type": {
-                "alignment_object": 1,
+                "visible_content_object": 1,
             },
             "remove_action": "unwrap",
             "keep_styles": {