interface name consistency

src/lib/observable/IObservable.hx

@@ -0,0 +1,9 @@
+package lib.observable;
+
+using tink.CoreApi;
+
+interface IObservable<T> {
+	public function set(value:T):Void;
+	public function get():T;
+	public function subscribe(callback:Callback<T>):CallbackLink;
+}