Merge pull request #447 from Stypox/better-deobfuscation

[YouTube] Cache deobfuscation code and more fixes

Author: TobiGr

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/ItagItem.java

@@ -94,7 +94,7 @@ public static ItagItem getItag(int itagId) throws ParsingException {
                 return item;
             }
         }
-        throw new ParsingException("itag=" + Integer.toString(itagId) + " not supported");
+        throw new ParsingException("itag=" + itagId + " not supported");
     }
 
     /*//////////////////////////////////////////////////////////////////////////