Updates:
* Better positions for new Mix nodes
* Replace Swap Outputs with a generic Swap Links function: It works the same if two nodes are selected. If one node with one input linked is selected, the link is cycled through the available inputs. If one node with two inputs linked is selected, the two links are swapped (useful if you want to swap the inputs of a Mix node for example)
* Lazy functions now work on nodes that are in frames

New features:
* Add Image Sequence - just a speedy way to select just one image from a sequence in the file browser and have it automatically detect the length of the sequence and set the node appropriately
* Add Multiple Images - simply allows you to select more than one image and adds a node for each (useful for importing multiple render passes or renders for image stacking)