* Refactor company properties to be presented from settings object instead of company properties
* Working on Email Tests
* Working on emails
* Working on email templats
* Include text version of email
* Refactor Email template builder into trait'
* Fix for custom_value4
* Refactor payment_date -> date && payment_type_id -> type_id
* expose paymentables to API
* expose paymentables to API
* Implement a next_send_date field in invoice/quote tables to allow control over reminder scheduling
* Add custom_values to users,documents and company_gateways tables
* Fixes for OpenAPI Documentation + fix support for docs for PHP 7.4
* Minor fixes for GMail API
* Add fix for 2 contacts with no email addresses failing validation, emails are optional! but cannot be duplicated if a value is set
* Return template as a object with subject and body components
* Fixes for OpenAPI Schema
* Stubs for payment edge cases
* payment tests