message: [contour] Lower OpenGL requirement to OpenGL (ES) 3.0
diff: @@ -306,12 +306,12 @@ QSurfaceFormat TerminalWidget::surfaceFormat()
  if (forceOpenGLES || QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES)
  {
  - format.setVersion(3, 1);
  + format.setVersion(3, 0);
  format.setRenderableType(QSurfaceFormat::OpenGLES);
  }
  else
  {
  - format.setVersion(3, 3);
  + format.setVersion(3, 0);
  format.setRenderableType(QSurfaceFormat::OpenGL);
  }
  format.setProfile(QSurfaceFormat::CoreProfile);
  