PR: Handle merging directories containing same-named read-only files

[apteryks]

Fixes #54.

• docrepr/utils.py (merge_directories): Also handle 'shutil.Error' exceptions.

[CAM-Gerlach]

Please update reference screenshots

[CAM-Gerlach]

For whatever reason, the checks aren't retriggering here even though I re-ran them. @Apteryks , could you e.g. git commit --amend your first commit (e.g. tweak the commit message to remove the period in the summary line, which doesn't belong in titles) and then force push to do so? Or would you mind if I did so for you, just to get the CI s to trigger?

[apteryks]

Done! But feel free to adjust the way you like.