Hoist inline `from tractor._exceptions import reg_err_types` calls up to
the module-level import block across 5 files so they follow normal
import ordering.
Other,
- `kraken/broker.py`: same; also add `ConfigurationError` import and
raise on missing `src_fiat` config field instead of `KeyError`.
- `storage/__init__.py`: same; also switch from relative to absolute
`piker.*` imports and reorder the import block.
- comment out stray `await tractor.pause()` in binance `feed.py`.
(this commit msg was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi
f210a478c6