Merge pull request #359 from UnityTech/fix_emoji

Fix emoji size.

Runtime/Resources/images/Emoji.png.meta

   serializedVersion: 10
   mipmaps:
     mipMapMode: 0
-    enableMipMap: 1
+    enableMipMap: 0
     sRGBTexture: 1
     linearTexture: 0
     fadeOut: 0
   platformSettings:
   - serializedVersion: 2
     buildTarget: DefaultTexturePlatform
-    maxTextureSize: 2048
+    maxTextureSize: 4096
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+  - serializedVersion: 2
+    buildTarget: Standalone
+    maxTextureSize: 4096
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+  - serializedVersion: 2
+    buildTarget: iPhone
+    maxTextureSize: 4096
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+  - serializedVersion: 2
+    buildTarget: Android
+    maxTextureSize: 4096
     resizeAlgorithm: 0
     textureFormat: -1
     textureCompression: 1