Support for newer versions and light draw fix

Avoid drawing light under covered tiles.

src/client/const.h

@@ -376,6 +376,7 @@ namespace Otc
         GamePVPMode = 50,
         GameWritableDate = 51,
         GameAdditionalVipInfo = 52,
+        GameBaseSkillU16 = 53,
 
         LastGameFeature = 101
     };