Compatibility issue between sgio and isorect example

[rhig2000]

The last line of the isorect example specifies density as "1.0d0" which cannot be converted to float in sgio _input.py, _readMaterial, line 163.

VABS seems to understand or ignore "1.0d0". Is it supposed to be "1.0e0"?

[wenbinyu-PU]

Yes, 1.0d0=1.0e0 for double precision in Fortran.

[rhig2000]

Ok, good. So it's a valid format. Thanks, Wenbin!

Please consider updating sgio to handle it for better compatibility.