* Remove unnecessary save() on invoice
* Update copyright
* Working on Credit Repository
* Implement credits as a paymentable entity
* Add credit_id to transformer
* fix rules for update payment
* Fix random deleted_at keys in transformers
* Fix for password_protect check
* Implement transformer for ClientGatewayTokens
* Add company_gateway_id to client gateway token transformer
* Fixes for client model
* Fixes for Number class