Initial commit
Update README and add matplotlib_utils.py
Add README.txt and cvrl-data
Add xy_python_utils by git-subtree

git-subtree-dir: xy_python_utils
git-subtree-mainline: 811d9dd86e6dcdea6fe8f110abcb9139850d5326
git-subtree-split: ead7007171b7af91a3257f68d02615b6da7dc302
Add .py files
Add .gitignore and __init__.py
Update xy_python_utils by git-subtree