--------------------
Added
^^^^^
- Added ``dtoolcore.storagebroker.BaseStorageBroker``
- Added logging to the reusable ``BaseStorageBroker`` methods
- ``get_text`` new method on ``BaseStorageBroker`` class
- ``put_text`` new method on ``BaseStorageBroker`` class
- ``get_admin_metadata_key`` new method on ``BaseStorageBroker`` class
- ``get_readme_key`` new method on ``BaseStorageBroker`` class
- ``get_manifest_key`` new method on ``BaseStorageBroker`` class
- ``get_overlay_key`` new method on ``BaseStorageBroker`` class
- ``get_structure_key`` new method on ``BaseStorageBroker`` class
- ``get_dtool_readme_key`` new method on ``BaseStorageBroker`` class
- ``get_size_in_bytes`` new method on ``BaseStorageBroker`` class
- ``get_utc_timestamp`` new method on ``BaseStorageBroker`` class
- ``get_hash`` new method on ``BaseStorageBroker`` class
- ``get_relpath`` new method on ``BaseStorageBroker`` class
- ``update_readme`` new method on ``BaseStorageBroker`` class
- ``DataSet.put_readme`` method that can be used to update descriptive metadata
in (frozen) dataset README whilst keeping a copy of the historical README
content
- Add ``storage_broker_version`` key to structure parameters