Add version information to zint.h and increment release version

Relates to #51

frontend_qt5/ZintUI/mainwindow.cpp

@@ -0,0 +1,14 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}