Strawberry Fields information.

Prints the installed version numbers for SF and its dependencies, and some system info. Please include this information in bug reports.


>>> sf.about()
Strawberry Fields: a Python library for continuous-variable quantum circuits.
Copyright 2018-2020 Xanadu Quantum Technologies Inc.

Python version:            3.9.6
Platform info:             Linux-
Installation path:         /home/strawberryfields/
Strawberry Fields version: 0.20.0
Numpy version:             1.19.5
Scipy version:             1.7.2
SymPy version:             1.9
NetworkX version:          2.6.3
The Walrus version:        0.16.2
Blackbird version:         0.4.0
XCC version:               0.1.0
TensorFlow version:        2.5.1