- Support hyperspherical normalization
- Support loading FastTD3 + SimbaV2 for both training and inference
- Support (experimental) reward normalization that uses SimbaV2's formulation -- not working that well though
- Updated README for FastTD3 + SimbaV2
- Fix an issue where the n-step reward is not properly computed for end-of-episode transitions when using n_step > 1.
- Fix an issue where the observation and next_observations are sampled across different episodes when using n_step > 1 and the buffer is full
- Fix an issue where the discount is not properly computed when n_step > 1
