Add input unit verification to supercell composite and sigtor
Add input unit verification to supercell composite and sigtor

jrleeman/MetPy,Unidata/MetPy,dopplershift/MetPy,ShawnMurd/MetPy,ahaberlie/MetPy,Unidata/MetPy,dopplershift/MetPy,ahaberlie/MetPy,jrleeman/MetPy