Bank Statement Extensions to Support e-banking

Module that extends the standard account_bank_statement_line object for improved e-banking support.

This module adds:

• valuta date
• batch payments
• traceability of changes to bank statement lines
• bank statement line views
• bank statements balances report
• performance improvements for digital import of bank statement (via 'ebanking_import' context flag)
• name_search on res.partner.bank enhanced to allow search on bank and iban account numbers