Only write writeable properties to the gdl file.
Only write writeable properties to the gdl file.

cgaebel/gluon,pranavrc/example-gluon,pranavrc/example-gluon,cgaebel/gluon,cgaebel/gluon,cgaebel/gluon,KDE/gluon,KDE/gluon,pranavrc/example-gluon,KDE/gluon,KDE/gluon,pranavrc/example-gluon