Add an exchange_rate field to bank_transaction_explanations

It’s currently possible to pull bank_transaction_explanations associated with a foreign currency bank account.

The foreign currency amount of the bank transaction will automatically be converted into the company’s base currency for reporting purposes.

However, since bank_transaction_explanations doesn’t have an exchange_rate field, there’s no way of knowing the equivalent base currency amount (and therefore the accounting impact) of these transactions.

Compare this with other endpoints like bills, which do have an exchange_rate field.

Are there any plans to support this?