added motor example

cleaned learning example, added animation

feat: add an example with mass and damping learning

feat: add lfs data

feat: add lfs data

feat: add template for go2

some fix in pendulum xml

feat: add mujoco model update from mjx one

tuned the pendulum learning

removed unnecesarry imports

added saving to xml and model conversion

fixed pendulum learning example

added learning exmple (WIP)

minor restructure and docstrings

feat: refactor pend example and model

add bathed short simulation

Merge branch 'feature/nonlinear-estimation' of https://github.com/lvj…

feat: add optimization with different guesses and plots with comparison

fix: update example

feat: add optax example with loss and skydio

feat: add rollout with parameters

Merge branch 'feature/nonlinear-estimation' of https://github.com/lvj…

added new data and simple models

Feature: MJX convert functions (#8)

added simple models

added some data

simulate PD controller for A1 based on data

feat: add mppi like sampling of parameters

feat: add sampling

feat: add example with parametric step in mjx