Force plato database update?

I have some updates to meta-data (mostly series numbering and names); when I re-upload those files from Calibre to my Kobo, Plato does not see the new data. There's one comment in the documentation on github about using "plato-import" to update the database, but I'm unable to locate that tool in either my install or on github.

How can I force an update of Plato's database?

Thanks!

Dan