Changeset [638eecff657f98c49942a8e7b4beb51f1173d29f] by Gregg Helt

Changed handling of feature selection array. Feature selection is shared amongst all DraggableFeatureTracks. So made selection array a static class variable and selection methods static class methods (rather than instance methods via prototype), to avoid mistaking as an instance method.
https://github.com/GMOD/jbrowse/commit/638eecff657f98c49942a8e7b4be...