old_contents: from .center import Center
  from .worker import Worker
  from .client import scatter, gather, delete, clear
  from .dask import get
  from .executor import Executor
  
  __version__ = '1.1.0'
  
new_contents: from .center import Center
  from .worker import Worker
  from .client import scatter, gather, delete, clear
  from .dask import get
  from .executor import Executor, wait, as_completed
  
  __version__ = '1.1.0'
  
subject: add wait and as_completed to top level api