Code infrastructure changes Continuous integration now uses GitHub actions Interface to gauopen API updated Improved versioning subroutines Electronic structure objects enhancements Extended two electron integrals, including enhanced use of spin symmetry, general molecular spin orbitals, and different bra and ket orbitals Routines for building truncated configuration interaction determinant expansions <S^2> matrix elements and One-particle density matrix for post-SCF method Linear algebra objects Enhancement to 'algebra2' types that are general and so do not require rank to be specified Additional features in 'algebra' types