StringPlug : Added support for input connections from StringVectorDataPlugs. The string value is formed by joining the string array using spaces.
StringVectorDataPlug : Added support for input connections from StringPlugs. The array value is formed by splitting the string on spaces.
PlugLayout : Fixed visibility of collapsible layouts with nesting (#4694).
Image Node Mix : Fixed incorrect results outside mask data window, and incorrect results when changing inputs.
ColorSwatchPlugValueWidget : Fixed popup dialogue for plugs belonging to Tools.
Spreadsheet : Fixed loading of files saved in Gaffer 0.62.0.0a2 and later.