Fixed serialisation of the FormatPlug.
Fixed serialisation of the FormatPlug.

ivanimanishi/gaffer,chippey/gaffer,hradec/gaffer,davidsminor/gaffer,appleseedhq/gaffer,ivanimanishi/gaffer,ImageEngine/gaffer,paulondc/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,paulondc/gaffer,boberfly/gaffer,GafferHQ/gaffer,chippey/gaffer,lucienfostier/gaffer,goddardl/gaffer,boberfly/gaffer,goddardl/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,boberfly/gaffer,davidsminor/gaffer,boberfly/gaffer,cedriclaunay/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,chippey/gaffer,appleseedhq/gaffer,hradec/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,chippey/gaffer,andrewkaufman/gaffer,paulondc/gaffer,ImageEngine/gaffer,ivanimanishi/gaffer,paulondc/gaffer,johnhaddon/gaffer,goddardl/gaffer,hradec/gaffer,cedriclaunay/gaffer,andrewkaufman/gaffer,davidsminor/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,hradec/gaffer,goddardl/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,davidsminor/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,hradec/gaffer,cedriclaunay/gaffer,johnhaddon/gaffer,cedriclaunay/gaffer,johnhaddon/gaffer