[recolor]: refactored recoloring to run asynchronously, displaying tiles when complete
[recolor]: refactored recoloring to run asynchronously, displaying tiles when complete

neurodata/NeuroDataViz,openconnectome/NeuroDataViz,neurodata/NeuroDataViz,neurodata/NeuroDataViz,openconnectome/NeuroDataViz,openconnectome/NeuroDataViz