v0.3.1

ITensorMPOCompression v0.3.1

Merged pull requests:

• CompatHelper: add new compat entry for ITensors at version 0.2, (keep existing compat) (#1) (@github-actions[bot])
• CompatHelper: add new compat entry for Documenter at version 0.27, (keep existing compat) (#2) (@github-actions[bot])