Version 3.3.1
Hotfix to v3.3 to check http response codes properly. Original notes for v3.3 below.
Update for new nomads paths as-of 2021032212Z model
NOAA says:
GFS to version 16 - March 22: GFSv16 will incorporate the wave model formerly known as wave_multi1. Because of this, the directory structure for its output will change from gfs.YYYYMMDD/CC/ to gfs.YYYYMMDD/CC// where component is atmos or wave.