LeRobot v0.4.0: Super Charging OSS Robotics Learning

The latest LeRobot v0.4.0 release supercharges open-source robotics with significant advancements in scalability, hardware integration, and user-friendly tools. A completely overhauled dataset infrastructure now handles massive collections with efficient streaming, while new models like PI0.5 and GR00T N1.5 unlock greater generalization capabilities. A groundbreaking plugin system simplifies connecting to real-world hardware, and expanded support for simulation environments like LIBERO and Meta-World broadens training possibilities. To accelerate development, the update also introduces powerful command-line tools for dataset editing, simplified multi-GPU training, and a new Hugging Face Robot Learning Course.