rename symbolic-scalable-gtk3.svg to symbolic-scalable.svg
export all 'gimp-tool-...-24' to 'gimp-tool-....png' to subfolder ...Symbolic/24
all 16x16 tool icons have now 24x24px 'twins'
add 'pixel-perfect' for 24x24
gimp-tool-ellipse-select-24
gimp-tool-foreground-select-24
gimp-tool-free-select-24
gimp-tool-hue-saturation-24
gimp-tool-levels-24
gimp-tool-posterize-24