Data repository for use in plasmapy functions.
NIST_STAR database: https://physics.nist.gov/PhysRefData/Star/Text/PSTAR.html https://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html https://physics.nist.gov/PhysRefData/Star/Text/ASTAR.html HDF5 file from package: https://github.com/Zelenyy/nist-calculators/tree/master