:16.0.0.0.1: Initial module.
:16.0.0.1: Add Multi Company ability
:16.0.0.2: rename product creation methode
:16.0.0.3: Make validity_date persistent, add batches to SO views
:16.0.0.4: Remove validity date
:16.0.0.5: Move product logic to sale order lines
:16.0.2.1.0: Add "In Progress" and "Cancelled" state
:16.0.2.2.0: Add invoice status and menues
:16.0.2.2.1: Add lst_price to view
:16.0.2.3.0: Add "Reset to Open"