FontPropertyManager: A mixin for DesignerPropertyManager that manages font properties. Adds an antialiasing subproperty and reset flags/mask handling for the other subproperties. It also modifies the font family enumeration names, which it reads from

may need to outset bounds a little, to account for hinting and or antialiasing. -may need to outset bounds a little, to account for hinting and or antialiasing.