Adds support for MuJoCo 2.1, which is now free and does not require a license anymore.

Fixing the build process and incorporating multiple user PRs.

Exposed mesh names from mujoco model.

Exposed "mj_setConst" functionality from the MjSim object.

Final release of MuJoCo 2.0 support.

Updated library to use MuJoCo version 2.0

mujoco-py 1.50.1.0 is a full rewrite from earlier versions. See the accompanying blog post for more information. Headline features include:

• Efficient handling of parallel simulations
• GPU-accelerated headless 3D rendering
• Direct access to MuJoCo functions and data structures
• Upgrade to MuJoCo 1.50, bringing features like its improved contact solver

1.50.1.0 is compatible with Python 3 only.

This release marks the last version before the release of v1.50.1.0, which dropped support for Python 2.