root/pypi: links for stretched

root/pypi stretched-0.0.1.tar.gz
root/pypi stretched-0.0.1-cp37-cp37m-macosx_10_7_x86_64.whl
root/pypi stretched-0.0.1-cp36-cp36m-macosx_10_7_x86_64.whl
root/pypi stretched-0.0.1-cp35-cp35m-macosx_10_7_x86_64.whl