chore: bump version to 0.4.0 for symbol-definitions release

New minor release adds symbol-definitions search capability

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ctoth

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mcp-server-code-extractor"
-version = "0.3.1"
+version = "0.4.0"
 description = "A Model Context Protocol (MCP) server that provides precise code extraction tools using tree-sitter parsing"
 readme = "README.md"
 requires-python = ">=3.11"