Run commands in each package folder starting with cwd skipping node_modules folders
# infinite depth
$ ep npm test
# top and second level only (default depth: Infinity)
$ ep -d1 npm test
# one at a time (default depth: concurrency)
$ ep -c1 npm test
# topological (default topological: false)
$ ep -t npm deploy
# one at a time (default private: false)
$ ep -p npm test