| 123456789101112 | source "https://rubygems.org"# If you want to use GitHub Pages, remove the "gem "jekyll"" above and# uncomment the line below. To upgrade, run `bundle update github-pages`.gem "github-pages", group: :jekyll_plugins# If you have any plugins, put them here!group :jekyll_plugins do  gem "jekyll-feed"  gem "jekyll-optional-front-matter"end
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