Make IRole inherit IEquatable<IRole>

src/Discord.Net/Entities/Roles/IRole.cs

@@ -5,7 +5,7 @@ using Discord.API.Rest;
 
 namespace Discord
 {
-    public interface IRole : IDeletable, ISnowflakeEntity
+    public interface IRole : IDeletable, ISnowflakeEntity, IEquatable<IRole>
     {
         /// <summary> Gets the color given to users of this role. </summary>
         Color Color { get; }

src/Discord.Net/Rest/Entities/Roles/Role.cs

@@ -57,6 +57,20 @@ namespace Discord
             await Discord.ApiClient.DeleteGuildRoleAsync(Guild.Id, Id).ConfigureAwait(false);
         }
 
+        public override bool Equals(object other)
+        {
+            if (other == null) return false;
+            Role otherAsRole = other as Role;
+            if (otherAsRole == null) return false;
+            else return Equals(otherAsRole);
+        }
+
+        public bool Equals(Role other)
+        {
+            if (other == null) return false;
+            else return (Id.Equals(other.Id));
+        }
+
         public Role Clone() => MemberwiseClone() as Role;
         
         public override string ToString() => Name;