All atoms possible are represented by the sto-3g, 3-21g, and def2 basis sets
Merge branch 'master' of github.com:psi4/psi4
Undo span-periodic-table basis set commit. Some contained ecps.
Add header file needed by icpc
Merge branch 'master' of github.com:psi4/psi4
Resolves issue psi4/psi4public#50