Update readme
Removed GetError call, deprecated. Protobuf interface to be updated w… …ith next engine minor version change
feat: update to SheepRLv0.4.8
Update dep in setup.py
fix: dependencies
Add render_mode attribute to gym class, add optional splash screen, f… …ix make env for custom env_address
Fix random integration test
Update Readme
Specify limit upper limit for diambra-engine version in v.2.1
Prefix version tag with v