[RFC] Add option to store the parameters during the optimization
Created by: PhilipVinc
Add an option to JsonLog to store the parameters during the optimisation. It will save them at every iteration when data is logged, inside a tar file with no compression. (In the future we might activate compression but it is tricky)
Adds two experimental functions in netket.variational.experimental to read data from a file or a tar file.
I'd like opinions.