--User changes

-Give tabs a height of 4px in the qss files. Looks a little large on 4k screens, but just right on HD screens which are much more common.
 -Allow for styling of zero and non-zero variation tree nodes via qss.
 -Allow for toggling whether to interpolate between colors in the palette editor, or to do hard cuts between colors.
 -Allow for adjusting spinner values with the + = or up arrow keys to increase, and - _ or down arrow keys to decrease.
 -Allow for responding to global presses of + = and - _ to cycle up or down to specify which xform is set as the current one.
 -Allow for adding "layers" via xaos which will add a user-specified number of xforms, and set certain xaos values to 0 or 1.
 -Add a new menu item under the Edit menu to copy the OpenCL iteration kernel source to the clipboard.
 -Show text on the status bar which indicates that an OpenCL kernel compilation is taking place.
 -Show xform name on xform combo box when expanded. Adjust size to fit all names.
 -Draw post affine circles using dashed lines.
 -Prevent QSS dialog from styling its editor, which makes it easier to see text when creating styles which have custom colors for text boxes.

--Bug fixes
 -Fix up some table layouts which seemed to have regressed/decayed over time for reasons unknown.
 -Using undo/redo would create a new flame in the library every time.
 -Solo was not being preserved when using undo/redo.

--Code changes
 -Make the solo flag be a part of the flame data now.
 -Fix some tabification in the OpenCL code for EllipticVariation.
 -Fix tabification in the varState code for OpenCL.
 -Add an event called m_CompileBegun to RendererCL that is called right before an OpenCL compile is begun.
 --This required making RendererCLBase not a pure virtual base class. Member functions just return defaults.
 -Filter key presses on main window to only process the third one. This is due to Qt triggering three events for every key press.
 -The palette preview table was installing an event filter for seemingly no reason. Remove it.
 -Mark certain virtual functions as override in SpinBox and DoubleSpinBox.

Source/Fractorium/FractoriumPalette.cpp

@@ -38,7 +38,6 @@ void Fractorium::InitPaletteUI()
 	palettePreviewTable->setItem(0, 0, previewNameCol);
 	auto previewPaletteItem = new QTableWidgetItem();
 	palettePreviewTable->setItem(0, 1, previewPaletteItem);
-	palettePreviewTable->installEventFilter(this);
 	connect(ui.PaletteFilterLineEdit,	 SIGNAL(textChanged(const QString&)), this, SLOT(OnPaletteFilterLineEditTextChanged(const QString&)));
 	connect(ui.PaletteFilterClearButton, SIGNAL(clicked(bool)),				  this, SLOT(OnPaletteFilterClearButtonClicked(bool)));
 	paletteTable->setColumnWidth(1, 260);//256 plus small margin on each side.
@@ -392,6 +391,7 @@ void FractoriumEmberController<T>::PaletteEditorButtonClicked()
 	ed->SetColorIndices(colorIndices);
 	ed->SetPaletteFile(m_CurrentPaletteFilePath);
 
+	//ed->setpal
 	if (ed->exec() == QDialog::Accepted)
 	{
 		//Copy all just to be safe, because they may or may not have synced.