Merge remote-tracking branch 'upstream/master' into fork_sync

BDV N5 format.md

LICENSE.txt

pom.xml

src/main/java/bdv/AbstractCachedViewerSetupImgLoader.java

src/main/java/bdv/AbstractSpimSource.java

src/main/java/bdv/AbstractViewerSetupImgLoader.java

src/main/java/bdv/BigDataViewer.java

src/main/java/bdv/BigDataViewerActions.java

src/main/java/bdv/SpimSource.java

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/ViewerImgLoader.java

src/main/java/bdv/ViewerSetupImgLoader.java

src/main/java/bdv/VolatileSpimSource.java

src/main/java/bdv/cache/CacheControl.java

src/main/java/bdv/export/CopyBlock.java

src/main/java/bdv/export/Downsample.java