If single DP ID requested without a list, naked filename is returned.
add tool to list contents of an ALMA Cycle 0 tarfile.  TBD: Cycle 1
clear out some bugs, but the cycle0 table is fully non-self-consistent
fix staging, cycle 0 parsing, and data size acquisition
add tool to extract files from tarballs based on regex
add tool to download all FITS files from a set of URLs
minor fixes and doc updates
rename download_FITS_files to download_and_extract_files and change docs
accordingly
Changed location of caching debug messages
Converted private __session from to non-public _session
Clear session redirect_cache

New requests will break otherwise
Add test for two retrieve_data() in a row
Docstring: __session -> _session
docs and docstring improvements
starting to add test
add stashed changes
local tests for staging - exceedingly complicated, but that's how it
goes
add fix for non-unique urls
add test data
add a setup_package for ALMA data (needed for the cycle0 table)
python 3 compatibility.