Main Processing Sequence

1. Convert the raw logs to the combined format.
2. Add them to the collected logs.
3. Process - sort, clean and compress entries.
4. Summarize the changes and update totals.

1995/
    1995/01/
        1995/01/01.gz  1995/01/02.gz  1995/01/03.gz  1995/01/04.gz
        ...
    1995/02/
        1995/02/01.gz  1995/02/02.gz  1995/02/03.gz  1995/02/04.gz
        ...
    1995/03/
        ...
    ...