Spelling check fails to run when non-standard characters are included in the dictionary

[ehumph]

I am working on a repo which includes a list of colleges participating in a project. Three of these colleges have letters that are not standard English letters. If they are not included in the dictionary, the spell check fails. If they are included in the dictionary, the spell check fails to completely run and throws an error.

Error can be seen in the PR:
fhdsl/GDSCN_BioDIGS_Book#6

The characters in question are ā, é, and ñ

[avahoffman]

I added some error catching here: jhudsl/ottr-reports#27 that could potentially resolve this for now. At least folks will know what's causing the issue.