Feature Updates

• Feature: add paw_vnl_psi and test

• Feature: design a new class DensityMatrix

• Bug fix: support to output the electrostatic potential in OFDFT calculation

• Bug fix: support cell-relax with OFDFT

• Bug fix: PBE loop for HF calculation

More information about latest updates (e.g. Test, Refactor, Bug fix and Documentation) can be found on our Github or Gitee repositories