- ITF14/DPLEIT/DPIDENT: ignore option_2 (check digit options)

- GUI: scalewindow: fix cropping resolution on initial setup
  (`spnResolution` max 1000 -> 254000) and bound X-dim to <= 10 in
  `set_maxima()`
- GUI: mainwindow: bound X-dim as above and clamp `m_xdimdpVars`
  members on initial load from INI
- GUI: undo `QString::mid()` -> `QString::midRef()` from clazy
  & explicitly include "QObject" in "qzint.h" (not Qt6 compatible)

frontend_qt/datawindow.cpp

@@ -67,7 +67,7 @@ DataWindow::DataWindow(const QString &input, bool isEscaped, int seg_no) : Valid
                 lastPosn = match.capturedEnd(0);
             }
         }
-        out += input.midRef(lastPosn);
+        out += input.mid(lastPosn);
         txtDataInput->setPlainText(out);
         statusBarData->showMessage(tr("Converted LFs"), tempMessageTimeout);
     } else {