WooCommerce PDF Invoices 5.0.7

* New filter for post types allowed for invoices woocommerce_pdf_invoice_ignore_order_types
* Fix logic check in get_invoice_display_invoice_num
* New meta key _invoice_created_mysql specifically used when resetting invoice number option is YES
* Upgrade - add _invoice_created_mysql for previous orders

* Fix for invoices not attaching to emails at checkout
* Fix bulk action 'create and email invoice'

* WC 5.8
* Filter for terms title (pdf_invioce_terms_title)
* Filter for terms content (pdf_invioce_terms_content)
* Filter for applying the_content (pdf_invioce_terms_content_apply_the_content)
* New option to create invoice date when invoice is created.
* Do not add date to invoice if no date is stored
* Make sure display_invoice_number is created and update the order if it's missing
* Additional classes and IDs for the template docs.woocommerce.com
* Fix "PHP Notice: Trying to access array offset on value of type bool"
* Fix download link test
* Add option to overlay "Paid In Full"
* Fix invoices not creating for Pending order status