ProNE option: "inconsistent shapes" error

[danielerosa]

I get an:

raise ValueError("inconsistent shapes")

from:
./nodevectors/prone.py line 61 in fit_transorm
./nodevectors/prone.py line 152, in chebyshev_gaussian
.../scipy/sparse/_base.py line 471, in add

the defaults work for small graph, ~ tens of thousands, but fail for 7M nodes and 50M edges graph