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A node that outputs useful information about the colour profile of an image.

Please can I have some feedback on the additions to the channelMaskPlug?

I have added a method that returns only channels with a unique channel index. This is used within the node to map one of the FloatPlugs within a Color4fPlug to one of the input channels supplied by the ChannelMaskPlug. Do we want to add an option to the constructor instead so that the result of the maskChannels() returns only those with unique IDs?