0.53.6.2

Improvements

• CustomAttributes : Added extraAttributes plug that can be set from CompoundData (#3191)
• StandardLightVisualiser : Setting locatorScale to 0 now avoids costly computations (#3178)
• GafferUI : Added compatibility patch to allow >0.54 layouts to load (#3206)

Fixes

• MultiLineTextWidget : Fixed unicode handling in selectedText() (#3183)
• SplineWidget : Fixed display transform management bug (#3187)
• ArnoldLight : Nodules no longer disappear when copy/pasting Arnold quad_light and skydome_light nodes (#3188)