Remove size_request from GtkPaned
Remove size_request from GtkPaned

This is not the final word; GtkPaned should really implement
height-for-width, but I didn't have time to complete that now.

Lyude/gtk-,ebassi/gtk,Lyude/gtk-,ahodesuka/gtk,chergert/gtk,davidgumberg/gtk,grubersjoe/adwaita,Lyude/gtk-,chergert/gtk,alexlarsson/gtk,msteinert/gtk,jigpu/gtk,ahodesuka/gtk,bratsche/gtk-,jadahl/gtk,Distrotech/gtk2,alexlarsson/gtk,davidgumberg/gtk,grubersjoe/adwaita,bratsche/gtk-,jigpu/gtk,davidgumberg/gtk,chergert/gtk,msteinert/gtk,davidt/gtk,grubersjoe/adwaita,bratsche/gtk-,ahodesuka/gtk,jessevdk/gtk,grubersjoe/adwaita,msteinert/gtk,jessevdk/gtk,ahodesuka/gtk,jigpu/gtk,chergert/gtk,chergert/gtk,davidgumberg/gtk,Distrotech/gtk2,jigpu/gtk,davidt/gtk,ahodesuka/gtk,Adamovskiy/gtk,bratsche/gtk-,grubersjoe/adwaita,grubersjoe/adwaita,davidgumberg/gtk,Adamovskiy/gtk,ebassi/gtk,msteinert/gtk,jadahl/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,jessevdk/gtk,jessevdk/gtk,ahodesuka/gtk,Distrotech/gtk2,simokivimaki/gtk,chergert/gtk,simokivimaki/gtk,alexlarsson/gtk,jigpu/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,ebassi/gtk,Distrotech/gtk2,grubersjoe/adwaita,Distrotech/gtk2,davidt/gtk,chergert/gtk,jessevdk/gtk,davidt/gtk,jadahl/gtk,alexlarsson/gtk,davidgumberg/gtk,Adamovskiy/gtk,simokivimaki/gtk,davidt/gtk,bratsche/gtk-,Lyude/gtk-,davidt/gtk,jadahl/gtk,Adamovskiy/gtk,Adamovskiy/gtk,ahodesuka/gtk,Lyude/gtk-,Lyude/gtk-,simokivimaki/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,jadahl/gtk,alexlarsson/gtk,Adamovskiy/gtk,jadahl/gtk,alexlarsson/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,simokivimaki/gtk,grubersjoe/adwaita,msteinert/gtk,bratsche/gtk-,ebassi/gtk,Sidnioulz/SandboxGtk,jigpu/gtk,Sidnioulz/SandboxGtk,jessevdk/gtk,alexlarsson/gtk,jadahl/gtk,jigpu/gtk,Distrotech/gtk2,ahodesuka/gtk,Adamovskiy/gtk,jadahl/gtk,simokivimaki/gtk,ebassi/gtk,jessevdk/gtk,jigpu/gtk,ebassi/gtk,chergert/gtk,davidgumberg/gtk,msteinert/gtk