Add setup_root.
During testing, create repo in pwd.
Subdirs to create.
Debugging.
Call setup_root.
Correct method name.
Better root.  Still not great.
Non-working option to debug on already-downloaded data.
Debugging info.
Begin to break stuff out.
Remove cruft.
Option to use already-downloaded data.
Cleanup.
Rework this a bit.
Declare $data.