I will mentor this in Google-Code-In-2016

In T147913#2800282, @MarkTraceur wrote:

Just a 2¢ here - should this be an option to keep the thumbnails open, or just to show them by default and allow them to be closed as normal?

I think the latter, show them by default, but allow closing.

Imported as https://codein.withgoogle.com/tasks/6264590774042624/

I'd say the name of the option could be altered to reflect that, then, but otherwise seems fine to me.

Hmm. Wondering why no notification was posted here: https://gerrit.wikimedia.org/r/#/c/327897/

Change 327897 had a related patch set uploaded (by Pppery):
Add showThumbnails option to slideshow galleries

https://gerrit.wikimedia.org/r/327897

@Aklapper Because I added a spurious blank line at the end of the commit message. Maybe gerritbot should be less strict.

Change 327897 merged by jenkins-bot:
Add showThumbnails option to slideshow galleries

https://gerrit.wikimedia.org/r/327897