Revision history for this software.

0.03  2021-09-23 00:00:00
  - rename LTSV-label 'when' to 'when_'
  - rename LTSV-label 'where' to 'where_'
  - add LTSV-label 'howmanysec' that means how many seconds used to make it
  - add checking double scanned barcode
  - created by INABA Hitoshi

0.02  2021-09-21 00:00:00
  - fix 9001_podtest.t
  - created by INABA Hitoshi

0.01  2021-09-20 00:00:00
  - original version;
  - created by INABA Hitoshi