Bump version to 0.3.0

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

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

Author: gcamp

setup.py

@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 
 setup(name='py-gtfs-loader',
-      version='0.2.0',
+      version='0.3.0',
       description='Load GTFS',
       url='https://github.com/TransitApp/py-gtfs-loader',
       author='Nicholas Paun, Jonathan Milot, Jeremy Steele',