* Fix Gym wrapper
- It was returning things in the wrong order
- Gym now differentiates between terminated and truncated
* Add DDPG
* Apply fixes
* Remove Result annotations
* Also remove Vec annotation
* rustfmt
* Various small improvements (avoid cloning, mutability, get clippy to pass, ...)
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Co-authored-by: Travis Hammond <travis.hammond@alexanderthamm.com>
Co-authored-by: Laurent <laurent.mazare@gmail.com>
