Yeah I forgot to bump a version # to 1.9 in one of the files. I updated the file to make sure it reflects 1.9 now, sorry about that.
Your webpage now looks correct when I look at it (the change is there). When you look at your about page and do a refresh you still have the problem? (maybe purge your browser's offline cache)
edit: looks like twentythirteen does have a small thing I should account for but its not that bad of an artifact (just a subtle enlargement of the bottom of the spoiler mechanism). Your site has the proper spoiler update and appears correct now in safari and firefox.