Fix some bug

For more detail in Changelog.

Fixed

• fix diag_op bug https://gitlab.ritc.jp/ricos/monolish/-/merge_requests/467 #136
• fix document typo https://gitlab.ritc.jp/ricos/monolish/-/merge_requests/466 #134

Changed

• Add compute_hash after transpose https://gitlab.ritc.jp/ricos/monolish/-/merge_requests/465 #135

Full Changelog: 0.16.2...0.16.3