Update todo.md

Import/TODO.md

@@ -7,6 +7,11 @@
     * async, delay, yield (provider written in C++)
     * Workflow to C++ code generation with hint
 * GacUI Resource
+    * InheritableCustomWindow
+    * InheritableCustomControl
+    * <ref.Event/>
+    * <ref.Component/> // readonly property with -eval
+    * GuiCustomControl::SetContainerComposition // using a special syntax
     * InstanceStyle:Replace
     * Pure C++ Code Generation
     * Visual State, State Machine, Animation
@@ -18,4 +23,7 @@
     * Abstract Graphics API
     * Controls: Chart, Ribbon, Dock Container
     * New template (generated pure C++ code), remove old ones
+* GacGen.exe
+    * Precompile log
+    * Property default value
 * GacStudio