The calls are the following:
`generate_payment_file()` -> `generate_party_block(...)` -> `generate_party_agent(...)`
The first was decorated with `api.multi` (with ensure_one) and the others with `api.model`.
This change allows to get the reference of the current payment order in
`generate_party_block(...)` and `generate_party_agent(...)` methods (for
instance to modulate the generation of the file depending on the related
payment method configuration).
* Standard migration procedure
* README by fragments
* Fixed tests
* Change
* Fix related no readonly in account_banking_pain_base
* Override default partner bank account check on account_payment_partner
* Convert Python date to string
* Add support for non-SEPA DD and CT without without IBANs
* Add hooks for l10n_ch_sepa (pain.001.001.03.ch.02)
* Move code of account_banking_pain_base/models/banking_export_pain.py to account_banking_pain_base/models/account_payment_order.py
* Add postal address in party block
* Adds flexibility to support direct debit direct debit for switzerland (pain.008.001.02.ch.01)
* Implement SEPA Core recommandations for postal address
* Add field local_instrument in payment lines and bank payment lines
* Add the bank_line as argument to some methods that generate SEPA XML
* Make it easier to extend structured communication types.
* Use new style to make selection extendable.
* Help text for bank and BIC fields. Courtesy of Alexis de Lattre.
* Do not use InstrPrty for Direct Debit.
