shortcut to BarBox. Shortcut is
  <kbd>5</kbd>-<kbd>9</kbd>.</li>
  <li>Added floor shortcut to number sliders. Shortcut is
  <kbd>Shift</kbd> + <kbd>Middle Click</kbd>.</li>
  <li>Added mutex around FFTW3. This may prevent crash by the call of
  thread unsafe functions in FFTW3.</li>
  </ul></li>
  <li>0.1.19
  <ul>
  <li>Added to <code>virtual</code> to destructor of common components.
  This may prevent some cause of crash or memory leak.</li>
  <li>Added code path for 64-bit ARM CPU (aarch64).</li>
  <l