Merge pull request #374 from UnityTech/fix_emoji

Fix emoji

Runtime/ui/txt/emoji.cs

             D.assert(emojiCodes != null && emojiCodes.isNotEmpty());
             D.assert(spriteSheetNumberOfColumns > 0);
             D.assert(spriteSheetNumberOfRows > 0);
-            D.assert(emojiCodes.Count >= spriteSheetNumberOfColumns * spriteSheetNumberOfRows);
+            D.assert(emojiCodes.Count <= spriteSheetNumberOfColumns * spriteSheetNumberOfRows);
             this.spriteSheetAssetName = spriteSheetAssetName;
             this.emojiLookupTable = new Dictionary<int, int>();
             for (int i = 0; i < emojiCodes.Count; i++) {
         );
         
         public static readonly EmojiResourceConfiguration appleEmojiConfiguration = new EmojiResourceConfiguration(
-            "images/EmojiIOS12.3",
+            "images/EmojiIOS13.2",
             emojiCodes: new List<int> {
                 0x1f004, 0x1f0cf, 0x1f170, 0x1f171, 0x1f17e, 0x1f17f, 0x1f18e,
                 0x1f191, 0x1f192, 0x1f193, 0x1f194, 0x1f195, 0x1f196, 0x1f197,