jch/html-pipeline — pull request #79 by jch (2013-08-20 19:50:58+00:00)
Title: Move activesupport to a development dependency

It's used for instrumentation, but the requirement is only an object
that supports an `ActiveSupport::Notification` compatible interface. See
[this section of the README](https://github.com/jch/html-pipeline#instrumenting)
for details.