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Oliver Bock authored
* Items are now in defined z-order: link (-1) -> component (0) -> node (1) * Ensures that nodes are on top of things * Makes sure itemAt() works properly on mouse release * Code cleanup: removed superfluous events and redundant code git-svn-id: https://svn.origo.ethz.ch/fidelity@27 53d1999f-d1a8-4366-aa61-588fded17473
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