Assist: abstractautoformatter Wjv/bugfix/add yixian notebooks
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requested to merge assist/autoformat/wjv/bugfix/add_yixian_notebooks/3310348d into wjv/bugfix/add_yixian_notebooks
Auto-format files with abstractautoformatter. Assist-MR for !372 (closed).
Note: after merging this MR, do not forget to update your local wjv/bugfix/add_yixian_notebooks branch via a git pull command.