[FIX] odoo.py dont force push simple

Everybody should upgrade to v2
[IMP] account.invoice.report: default `Year` filter should include draft invoices without `date`

This affects the result when Draft invoices are included,
so that they actually appear even without any `date` value,
as they are often meant for the current year.
[IMP] Add domain for public_categ_id field and improve demo file