User

- Added new type
- No default constructor as I need to actually initialize somethings

Users (unittests)

- Added a rudimentary unittest

source/renaissance/server/users.d

@@ -0,0 +1,25 @@
+module renaissance.server.users;
+
+import core.sync.mutex : Mutex;
+
+public struct User
+{
+    private string username;
+    private Mutex lock;
+
+    @disable
+    private this();
+
+    this(string username)
+    {
+        this.lock = new Mutex();
+    }
+
+    // TODO: Disallow parameter less construction?
+}
+
+
+unittest
+{
+    User u = User("deavmi");
+}