Merge branch 'bump-commonmarker' of https://github.com/github/markup into bump-commonmarker

Author: nickborromeo

Gemfile

@@ -5,6 +5,8 @@ gem "posix-spawn", :platforms => :ruby
 gem "redcarpet", :platforms => :ruby
 gem "kramdown", :platforms => :jruby
 gem "RedCloth"
+# using a tag version here because 0.18.3 was not published by the author to encourage users to upgrade.
+# however we want to bump up to this version since this has a security patch
 gem "commonmarker", git: "https://github.com/gjtorikian/commonmarker.git", tag: "v0.18.3"
 gem "rdoc", "~>3.6"
 gem "org-ruby", "= 0.9.9"