Use modern “.no_kozai” sat attribute, not “.no”
Use modern “.no_kozai” sat attribute, not “.no”

The official SGP4 library renamed this attribute, and “.no” in the
“sgp4” library is now merely an alias for it.  (An alias, as it happens,
that is missing from the pure-Python version of SGP4 that the library
falls back to under Python 2.7; so this switch should get our build
fixed until such time as a new “sgp4” is released.)

skyfielders/python-skyfield,skyfielders/python-skyfield