REL: use dots (...) in place of a version number for `cvxopt`
REL: use dots (...) in place of a version number for `cvxopt`

in the commented pin within the file `requirements.txt`.
Note in a comment that the version of `cvxopt` is determined
by `polytope`, so it depends on which version of `polytope`
is installed (the function `install_cvxopt` in the script
`setup.py` is relevant).

tulip-control/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control