Mk2Rev1

various bugfixes and such.
also bookmarks, temp song loaderm and undo overhaul with near complete multiplayer, but menu items disabled. i really wish i could split this into multiple commits, but i don't know how to work unreal.

Plugins/ZipUtility-ue4/Source/ZipUtility/Private/ZipOperation.cpp

@@ -0,0 +1,34 @@
+#include "ZipUtilityPrivatePCH.h"
+#include "SevenZipCallbackHandler.h"
+#include "WFULambdaRunnable.h"
+#include "ZipOperation.h"
+
+UZipOperation::UZipOperation()
+{
+	CallbackHandler = nullptr;
+}
+
+void UZipOperation::StopOperation()
+{
+	if (ThreadPoolWork != nullptr)
+	{
+		WFULambdaRunnable::RemoveLambdaFromQueue(ThreadPoolWork);
+	}
+
+	if (CallbackHandler != nullptr)
+	{
+ 		CallbackHandler->bCancelOperation = true;
+		CallbackHandler = nullptr;
+	}
+}
+
+void UZipOperation::SetCallbackHandler(SevenZipCallbackHandler* Handler)
+{
+	CallbackHandler = Handler;
+}
+
+void UZipOperation::SetThreadPoolWorker(IQueuedWork* Work)
+{
+	ThreadPoolWork = Work;
+}
+