基础内容

必要插件安装
缓动曲线和动画基础
ElementFolder，Track与其次级模块，PathNode重构

Assets/Plugins/UniRx/Scripts/InternalUtil/CancellableTaskCompletionSource.cs

@@ -0,0 +1,23 @@
+#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace UniRx.InternalUtil
+{
+    internal interface ICancellableTaskCompletionSource
+    {
+        bool TrySetException(Exception exception);
+        bool TrySetCanceled();
+    }
+
+    internal class CancellableTaskCompletionSource<T> : TaskCompletionSource<T>, ICancellableTaskCompletionSource
+    {
+       
+    }
+}
+
+#endif