chore: Bump version to 0.3.0 in __init__.py

Author: jbeno

cursor_notebook_mcp/__init__.py

@@ -5,6 +5,6 @@
 AI agents within Cursor to interact with Jupyter Notebook (.ipynb) files.
 """
 
-__version__ = "0.2.4"
+__version__ = "0.3.0"
 
 # Components are imported directly where needed (e.g., in notebook_mcp_server.py)