Fix build with Qt 5.6 on Windows.

src/app/valentina/mainwindow.cpp

@@ -204,6 +204,7 @@
 #include <QDesktopServices>
 #include <chrono>
 #include <thread>
+#include <memory>
 #include <QFileSystemWatcher>
 #include <QComboBox>
 #include <QDoubleSpinBox>
@@ -214,7 +215,6 @@
 #include <QStyleFactory>
 #include <QImageReader>
 #include <QUuid>
-#include <chrono>
 
 #if defined(Q_OS_WIN32) && QT_VERSION < QT_VERSION_CHECK(6, 0, 0) && QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
 #include <QWinTaskbarButton>

src/libs/vdxf/libdxfrw/libdxfrw.cpp

@@ -16,6 +16,7 @@
 #include <algorithm>
 #include <sstream>
 #include <cassert>
+#include <memory>
 #include <QScopedPointer>
 #include "intern/drw_textcodec.h"
 #include "intern/dxfreader.h"

src/libs/vlayout/dialogs/watermarkwindow.cpp

@@ -36,6 +36,7 @@
 #include <QMessageBox>
 #include <QStyle>
 #include <QtConcurrent>
+#include <memory>
 
 #if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
 #include "../vmisc/backport/qoverload.h"

src/libs/vtools/tools/vtoolseamallowance.cpp

@@ -77,6 +77,7 @@
 #include <QUuid>
 #include <QtMath>
 #include <chrono>
+#include <memory>
 
 #if (defined(Q_CC_GNU) && Q_CC_GNU < 409) && !defined(Q_CC_CLANG)
 // DO NOT WORK WITH GCC 4.8

src/libs/vtools/tools/vtooluniondetails.cpp

@@ -37,6 +37,7 @@
 #include <QUndoStack>
 #include <QtDebug>
 #include <new>
+#include <memory>
 
 #include "../dialogs/tools/dialoguniondetails.h"
 #include "../ifc/xml/vdomdocument.h"

src/libs/vwidgets/vhighlighter.cpp

@@ -26,6 +26,7 @@
  **
  *************************************************************************/
 #include "vhighlighter.h"
+#include <memory>
 
 //---------------------------------------------------------------------------------------------------------------------
 VTextBlockData::VTextBlockData()