[mujoco-playground] Bump version.

PiperOrigin-RevId: 734622124
Change-Id: Id5fbe7820172bf8b8904ea409b115d94a8b1a6b2

Author: kevinzakka

CHANGELOG.md

@@ -2,14 +2,19 @@
 
 All notable changes to this project will be documented in this file.
 
-## Unreleased
+## [0.0.4] - 2025-02-07
 
 ### Added
 
 - Added ALOHA handover task (thanks to @Andrew-Luo1).
+- Added Booster T1 joystick task.
 
 ### Changed
 
+- Fixed foot friction randomization for G1 tasks.
+- Fix various bugs in `train_jax_ppo.py` (thanks to @vincentzhang).
+- Fixed a small bug in the privileged state of the go1 joystick task.
+
 ## [0.0.3] - 2025-01-18
 
 ### Changed

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "playground"
-version = "0.0.3"
+version = "0.0.4"
 readme = "README.md"
 authors = [
     {name = "Google DeepMind", email = "[email protected]"},