v1254

• Add support for new resource InvoiceRenderingTemplate
• Add support for archive, list, retrieve, and unarchive methods on resource InvoiceRenderingTemplate
• Add support for template on Customer#create.invoice_settings.rendering_options, Customer#update.invoice_settings.rendering_options, Customer.invoice_settings.rendering_options, Invoice#create.rendering, Invoice#update.rendering, and Invoice.rendering
• Add support for template_version on Invoice#create.rendering, Invoice#update.rendering, and Invoice.rendering