fix: clarify reference to Lot sizing environment and PPO implementation in README.md

fix: update Arxiv link in README.md to use correct URL format

Reorganize repository: exclude binary files

update .gitattributes to remove unused file types and add .gitignore for .npy files

add paper availability link to README.md

Merge branch 'main' of https://huggingface.co/leokana/pdppo

Initial commit of PDPPO implementation

initial commit

update README.md to include paper reference and contact information

refactor README.md for clarity and conciseness

update the frozenlake environment

include experiment results and updated code

include modifications to test dual critic ppo

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

first commit

Initial commit