Made API models internal. Removed Discord.Net.API.

src/Discord.Net.Rest/API/Image.cs

@@ -0,0 +1,21 @@
+using System.IO;
+
+namespace Discord.API
+{
+    internal struct Image
+    {
+        public Stream Stream { get; }
+        public string Hash { get; }
+
+        public Image(Stream stream)
+        {
+            Stream = stream;
+            Hash = null;
+        }
+        public Image(string hash)
+        {
+            Stream = null;
+            Hash = hash;
+        }
+    }
+}