Layouts : Use `repr()` to serialise the layout
Layouts : Use `repr()` to serialise the layout

This guarantees that the string is properly escaped.

johnhaddon/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,hradec/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,ivanimanishi/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,hradec/gaffer,boberfly/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,ivanimanishi/gaffer,ivanimanishi/gaffer,appleseedhq/gaffer,ivanimanishi/gaffer,boberfly/gaffer,boberfly/gaffer,johnhaddon/gaffer,hradec/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,boberfly/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,hradec/gaffer,lucienfostier/gaffer,hradec/gaffer