Change to inventory model/generation and begin integrating with refactored code in dataseries.py to generate a filled series of data.  Checkpointing progress.
Add a data_found column to the inventory table for additional accounting.
First cut of inventory generation and gap scan in place, command line args, etc.
Forgot to add the right limiting logic ot the gap scan.  Oops.
update architecture diagram
fix formatting and add diagram to architecture section
fix formatting and refs in intro
Make absolutely references are cleared.
documentation updates
Data storage/processing mods.
Rename since it's not really a sketch anymore.
Toggle skipping blank/null ifaliases (defaults to skip).
Make the arg help string more explicit.
Use oidset.set_name when generating inventory.
Removing script since the logic has been implemented in the modules.
Add logic to catch out of order ifref start and end times, and a new database column in the inventory table to log any runtime issues.
Might as well add issues column the gap inventory as well just in case we eventually need it.
Changes to get ifref information from other tables based on oidset and put in a lower bound threshold for a gap to be considered worth noting.
Changed default gap lower bound threshold back to zero.
Added inventory counter to verbose scan output.