--User changes

-Add buttons to copy and paste affine transforms.
 -Show xform names on the column headers of the xaos table.
 -Add a color-coded third column to the variations tree which shows any properties of each variation which are non-standard.
 -Draw a transparent circle over hovered xforms.
 -Change how xforms respond to dragging. Rotate only is now the default, and scale will only happen with shift.
 --Optionally do scale and rotate when holding shift, via a setting in the options dialog.

--Bug fixes
 -Snapping when dragging was wrong sometimes.
 -The program would very rarely crash on startup due to some values being in an uninitialized state.

--Code changes
 -Change almost every variation to use fma() in OpenCL when doing computations of the form a * b + c. This provides a slight speedup, mostly in double precision mode.
 -Also apply fma() to affine calcs.
 -Cleanup of OpenGL affine drawing code.
 -Separate the concept of hovering and selecting xforms.

Source/Fractorium/FractoriumXforms.cpp

@@ -412,6 +412,7 @@ void FractoriumEmberController<T>::XformNameChanged(int row, int col)
 		XformCheckboxAt(int(xfindex), [&](QCheckBox * checkbox) { checkbox->setText(MakeXformCaption(xfindex)); });
 	}, eXformUpdate::UPDATE_CURRENT, false);
 	FillSummary();//Manually update because this does not trigger a render, which is where this would normally be called.
+	m_Fractorium->FillXaosTable();
 }
 
 void Fractorium::OnXformNameChanged(int row, int col)
@@ -570,6 +571,7 @@ void FractoriumEmberController<T>::FillXforms(int index)
 	if (UseFinalXform())
 	{
 		auto cb = new QCheckBox(MakeXformCaption(i), m_Fractorium);
+		QObject::connect(cb, &QCheckBox::stateChanged, [&](int state) { m_Fractorium->ui.GLDisplay->update(); });
 		m_Fractorium->m_XformSelections.push_back(cb);
 		m_Fractorium->m_XformsSelectionLayout->addRow(cb, new QWidget(m_Fractorium));
 		combo->addItem("Final");
@@ -600,7 +602,6 @@ void FractoriumEmberController<T>::FillXforms(int index)
 /// Update the text in xforms combo box to show the name of Xform.
 /// </summary>
 /// <param name="index">The index of the Xform to update.</param>
-///
 template<typename T>
 void FractoriumEmberController<T>::UpdateXformName(int index)
 {