This module included previously support for taxes and pricelists.
Taxes are now included in upstream Odoo v10, so that feature is removed.
The pricelist feature, however, is supported in upstream Odoo v11. Thus, to ease the migration path, that functionality has been scalpel-backported from there.
This also means a great diff between previous OCA-only code and current Odoo-backport-only code, but with the advantage that the end user gets exactly the behavior that he would have when updating to v11.
Since most of the code has been copied from Odoo, the addon now has to become LGPL, and Odoo has been added as an author.
Jairo Llopis