`VMC.info()` error

Created by: mmezic

Calling VMC.info() gives this error message because of depreciated variable name sr:

~/.local/lib/python3.8/site-packages/netket/driver/vmc.py in info(self, depth)
    166                 ("Hamiltonian ", self._ham),
    167                 ("Optimizer   ", self._optimizer),
--> 168                 ("SR solver   ", self.sr),
    169                 ("State       ", self.state),
    170             ]

AttributeError: 'VMC' object has no attribute 'sr'