v0.2

What's Changed

• The manual in English appears!
• The way to generate a random initial state is changed
• New option to switch Hartree/Hartree-Fock model for UHFk, mode.flag_fock is added.
• Data layout of eigenvalue and eigenvector output is corrected
• Samples are moved to an external repository
  • https://isspns-gitlab.issp.u-tokyo.ac.jp/hwave-dev/hwave-gallery