What's Changed
* Add method to subscribe to multiple storage keys at once by arjanz in https://github.com/polkascan/py-substrate-interface/pull/328
* Extensions framework by arjanz in https://github.com/polkascan/py-substrate-interface/pull/329
* Fix rpc message order by turuslan in https://github.com/polkascan/py-substrate-interface/pull/311
* Custom ss58_format for ss58_encode() by arjanz in https://github.com/polkascan/py-substrate-interface/pull/323
* calculate weight when upload_code==false by zabuxx in https://github.com/polkascan/py-substrate-interface/pull/321
New Contributors
* turuslan made their first contribution in https://github.com/polkascan/py-substrate-interface/pull/311
* zabuxx made their first contribution in https://github.com/polkascan/py-substrate-interface/pull/321
**Full Changelog**: https://github.com/polkascan/py-substrate-interface/compare/v1.5.2...v1.6.0