Return type of eigenvalues from lqr and lqe not consistent #439
Description
This came up while pytestifying statefbk_test.py (#438)
lqr() will always return E as (nstates, ) array
python-control/control/statefbk.py
Lines 444 to 446 in d3142ff
lqe() returns _ssmatrix(E) which is a (nstates, ) array or (1, nstates) matrix depending on config.defaults.use_numpy_matrix()
python-control/control/statefbk.py
Line 290 in d3142ff