According to DLsite v171114 added the sprite gallery, and the savegames being from 17/11/12 had me jump to false conclusions.
That said, there were supposedly two further version ups, one -according to DLsite update info- fixing some things in the gallery?
Why they don't actually use version numbers or reference updates in their text documents, is beyond me, though. (or I'm blind lol)
Makes life for an honest pirate much harder, y'know?! xD