Upgrade polkadot to v0.9.12
Remove unneeded step for contracts in README
- manual merge of develop
- test use rtt from metadata
- Merge branch 'develop' into feature/CORE-162
Enforce codestyle
difftreelog
commits
tests/src/substratehistorytests/src/substratehistoryUpgrade polkadot to v0.9.12
Remove unneeded step for contracts in README
Enforce codestyle