prepare for release 0.4.0 (axolotl-ai-cloud#1175)

Author: winglian

setup.py

@@ -41,7 +41,7 @@ def parse_requirements():
 
 setup(
     name="axolotl",
-    version="0.3.0",
+    version="0.4.0",
     description="LLM Trainer",
     long_description="Axolotl is a tool designed to streamline the fine-tuning of various AI models, offering support for multiple configurations and architectures.",
     package_dir={"": "src"},