- removes the need to install a hook into the NamedTemporaryFile instance to delete the corresponding -journal file in the event of program termination.  clean-up is the responsibility of the context manager.
- backwards compatibility wrappers are provided
- a small change in calling code is, however, required:  in all calling codes, much change connect(tmpname) to connect(str(tmpname)).  this can be done in advance of the python-ligo-lw release.
- fixes issue #!14