Improve reconciliation performance
The creation of reconciliation trigger the processing of the invoices so for performance reason it is important to create reconciliation records grouped.
But the Line.reconcile method, which is the standard way to create reconciliation, create one reconciliation at a time.
So I propose to improve the API in the best backward compatible way to allow to reconcile a list of lines and thus create all the reconciliation at once.
The account statement could benefit from this design to reconcile all the lines linked to an invoice at once.