Highway-env

Fix release workflow

(Didn't see that the version definition had been moved from config to __init__)

- Fix creation of vehicles in parking env
- Bug fixes for kinematics observation
- Fix Lidar observation
- Fix boundaries check in occupancy grid observation
- Update docs
- Update numpy deprecated calls
- Fix road priorities
- Fix non-determinism in route planning
- Fix multiagent wrapper for intersection env

- Fix collision reward in parking env
- Minor update of documentation and workflows
- Minor update of example notebooks
- Update rendering logic