* 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 client/group/company level counters clientCounter, groupCounter and counter
* Implement functionalityfor customising the timing of invoice_number creation
* Add Jobs
* adjustments
* clean line items at the request layer
* Clean line items at the request layer
* minor formatting for notification
* Schema Fixes
* schema changes, cast country_id to stirng
* Fixes for tests
* force line item ids to string
* Map company gateway fees and limits
* Schema changes
* Remove id from invoice item stdClass
* Remove settings object from invoice table
