This is a continuum and line stacking tool. See the stackem [wiki] (link to wiki) for more details, and examples.
pip install Stackem
git clone github.com/SpheMakh/Stackem
cd Stackem
python setup.py install --record stackem_files.txt
pip uninstall stackem
cd Stackem
cat stackem_files.txt | xargs rm stackem_files.txt