Update CHANGELOG

CHANGELOG.md

@@ -12,6 +12,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Use spaces utilities to process states, observations and actions for all the library components
 - Update model instantiators definitions to process supported fundamental and composite Gymnasium spaces
 - Make flattened tensor storage in memory the default option (revert changed introduced in version 1.3.0)
+- Drop support for PyTorch versions prior to 1.10 (the previous supported version was 1.9).
+
+### Removed
+- Remove OpenAI Gym (`gym`) from dependencies and source code. **skrl** continues to support gym environments,
+  it is just not installed as part of the library. If it is needed, it needs to be installed manually.
+  Any gym-based environment wrapper must use the `convert_gym_space` space utility to operate
 
 ## [1.3.0] - 2024-09-11
 ### Added
@@ -95,7 +101,7 @@ Summary of the most relevant features:
     - `from skrl.envs.loaders.jax import load_omniverse_isaacgym_env`
 
 ### Changed
-- Drop support for versions prior to PyTorch 1.9 (1.8.0 and 1.8.1)
+- Drop support for PyTorch versions prior to 1.9 (the previous supported version was 1.8)
 
 ## [1.0.0-rc.1] - 2023-07-25
 ### Added
@@ -188,7 +194,7 @@ to allow storing samples in memories during evaluation
 - Parameter `role` to model methods
 - Wrapper compatibility with the new OpenAI Gym environment API
 - Internal library colored logger
-- Migrate checkpoints/models from other RL libraries to skrl models/agents
+- Migrate checkpoints/models from other RL libraries to **skrl** models/agents
 - Configuration parameter `store_separately` to agent configuration dict
 - Save/load agent modules (models, optimizers, preprocessors)
 - Set random seed and configure deterministic behavior for reproducibility