PSR-4 standards followed

PSR-4 standards followed
Line tax support provided for Inventory modules.
Line item can now be added, updated or deleted. (This costs 2 API Credits)
Org tax API supported.
Trigger support given for specific(single) create and update operations.
Lead Assignment rule supported.
Custom DB support provided.
Duplicate check fields support provided for upsert record.
Additional details can be added to Convert Lead operation.
Criteria pattern and condition can be extracted directly in customview API.
Multiple clients are supported.
Sample codes for all operations provided.