Update license headers

src/main/java/bdv/TransformEventHandler.java

src/main/java/bdv/TransformEventHandler2D.java

src/main/java/bdv/TransformEventHandler3D.java

src/main/java/bdv/TransformEventHandlerFactory.java

src/main/java/bdv/TransformState.java

src/main/java/bdv/util/AWTUtils.java

src/main/java/bdv/util/DelayedPackDialog.java

src/main/java/bdv/util/MovingAverage.java

src/main/java/bdv/util/TripleBuffer.java

src/main/java/bdv/viewer/InteractiveDisplayCanvas.java

src/main/java/bdv/viewer/OverlayRenderer.java

src/main/java/bdv/viewer/TransformListener.java

src/main/java/bdv/viewer/ViewerFrame.java

src/main/java/bdv/viewer/ViewerOptions.java

src/main/java/bdv/viewer/render/EmptyProjector.java

src/main/java/bdv/viewer/render/MultiResolutionRenderer.java

src/main/java/bdv/viewer/render/PainterThread.java

src/main/java/bdv/viewer/render/ProjectorFactory.java

src/main/java/bdv/viewer/render/ProjectorUtils.java

src/main/java/bdv/viewer/render/RenderResult.java