root/pypi: links for blockbuilder

root/pypi blockbuilder-0.6.0.tar.gz
root/pypi blockbuilder-0.6.0-py3-none-any.whl
root/pypi blockbuilder-0.5.1.tar.gz
root/pypi blockbuilder-0.5.1-py3-none-any.whl
root/pypi blockbuilder-0.5.dev0.tar.gz
root/pypi blockbuilder-0.5.dev0-py3-none-any.whl