- New-style license headers.
- Remove .pot file.
- Remove tax codes stuff, now removed from v9.
- Refactor methods for search, create, update, delete. Now they are smaller, fitter, happier, more productive.
- Only update fields that have any kind of change on any updated record.
- Place the wizard in the configuration page, instead of its own menu item.
- Display amount of disabled taxes at ending page.
