Workaround for SciPy solve_lyapunov bug
Workaround for SciPy solve_lyapunov bug

In SciPy 1.0.0, `scipy.linalg.solve_lyapunov` is not importable. See
this PR for details:
https://github.com/scipy/scipy/pull/8082

Signed-off-by: Mihai Capotă <deda1b05bacf55e53e05d323db42d6d24e69f769@mihaic.ro>

pymanopt/pymanopt,nkoep/pymanopt,nkoep/pymanopt,pymanopt/pymanopt,nkoep/pymanopt