 * Removed Theming support from DockWindows. Borders and tabs are now drawn using lines instead of stretching images.
 * Changed default font to use the system font
 * Moved enthought.util.wx.clipboard to Pyface
 * Moved the grid package out of pyface and into pyface.ui.wx, left deprecated warnings
 * Improved info shown to the user if toolkits don't work as expected

