Utilitaries

pypi_versions(package_name)	Retrieve the different versions of a package on PyPi.
conda_versions(package_name[, channels, build])	Retrieve the different versions of a package on anaconda.
git_versions(package_path[, tags])	Return a list of git versions of a package.
svn_versions(package_path)	Extract all the svn versions of a given directory
sh(cmd)