V1.9.1
- Enhancement: Filter added 'pmpro_should_generate_pdf'. Allows developers to stop generating PDFs for certain cases.
- Enhancement: Filter added 'pmpropdf_invoice_table_requires_active_membership'. Restricts PDF invoices table/shortcode to members only. Thanks @mircobabini
- Bug Fix/Enhancement: Make sure an order exists when generating PDF invoice. Thanks @mircobabini