- introduce storage cache to make every unique
storage connection only once
- add functionality to pass optional processing
kwargs in queue message like the operation key to
the processing function
- forward x-tenant-id from queue message header to
payload processor
- add functions to receive storage infos from an
endpoint or the config. This enables hashing and
caching of connections created from these infos
- add function to initialize storage connections
from storage infos
- streamline and refactor tests to make them more
readable and robust and to make it easier to add
new tests
- update payload processor with first iteration
of multi tenancy storage connection support
with connection caching and backwards compability
