0.61.3.0

Features

RandomChoice : Added new node for choosing a random value from a list of weighted choices.
ArnoldImager : Added new node for adding Arnold imagers to the scene globals.

LightEditor/SceneViewInspector : Improved performance when viewing complex scenes.
GraphEditor :
- The focus widget now ignores right clicks, avoiding situations where attempting to open a context menu could accidentally change focus.
- Removed the focus widget from Expression, Random, Spreadsheet and Animation nodes.
StandardAttributes : Added attributes.displayColor plug, for controlling the colour of objects in the Viewer.
UI : The UI is now scaled automatically for high-resolution monitors on Linux (#2157). Set the QT_ENABLE_HIGHDPI_SCALING environment variable to 0 to disable.
ArnoldOptions : Added ignore_imagers option.

Viewer : Fixed gnomon, which went missing in Gaffer 0.61.0.0.
PathListingWidget : Fixed hangs triggered by hiding a widget while Python-based columns were being queried.
VectorDataWidget :
- Fixed header visibility when setHeader() is called after construction.
- Fixed errors displaying vectors of differing lengths. Note : it is not yet possible to edit vectors of differing lengths.
PrimitiveInspector :
- Fixed errors displaying Constant primitive variables with differing array lengths.
- Fixed header tooltip formatting to match the SceneInspector.
LightEditor : Fixed column widths. This was only an issue in Qt 5.12 builds, not the official GafferHQ builds.
USD :
- Fixed Failed to load attribute warnings caused by attributes without an authored value.
- Fixed loading of Houdini-style paired primitive variables used to represent varying-length-arrays per vertex/face.

StandardNodeGadget : Added nodeGadget:focusGadgetVisible metadata.
VectorDataPlugValueWidget :
- Added support for showing plugs with children, with each child forming a column in the UI.
- Added vectorDataPlugValueWidget:elementDefaultValue metadata, used to provide the initial value for newly added rows.