--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/Fractorium.h

@@ -114,7 +114,11 @@ public:
 	void CurrentXform(uint i);
 
 	//Xforms Affine.
+	bool DrawCurrentPre();
+	bool DrawSelectedPre();
 	bool DrawAllPre();
+	bool DrawCurrentPost();
+	bool DrawSelectedPost();
 	bool DrawAllPost();
 	bool LocalPivot();
 
@@ -279,6 +283,8 @@ public slots:
 	void OnScaleDownButtonClicked(bool checked);
 	void OnScaleUpButtonClicked(bool checked);
 	void OnResetAffineButtonClicked(bool checked);
+	void OnCopyAffineButtonClicked(bool checked);
+	void OnPasteAffineButtonClicked(bool checked);
 	void OnRandomAffineButtonClicked(bool checked);
 
 	void OnAffineGroupBoxToggled(bool on);