Unified format uses transfer type as the first byte
and extra details next. List of transfer types used in
contracts defined in `details.go`. It includes:
- audit settlement,
- basic income collection,
- basic income distribution.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Some transfers from container owners into bank account may
fail due to lack of assets, so we have to deal with remaining
amount of assets in banking account.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>