Fixing image_tag helper so it only attempts to auto image sizes file extensions supported by FastImage. This can be overriden by passing param :supported_extensions into the image_tag helper.
Fix for embedded Markdown in Slim w/ Redcarpet
Changed log message when middleman starts.
Old message: == The Middleman is standing watch on port 4567
New message: == The Middleman is standing watch at http://0.0.0.0:4567

The URL in the message makes it clickable if the terminal supports it.
Using 'Socket.gethostname' to get default hostname
As suggested by @bhollis in https://github.com/middleman/middleman/pull/665#issuecomment-10262763
Added fix for empty YAML
turn html5 boilerplate into a layout

set hbp5 as the DEFAULT layout

use titles from YAML options
Lock therubyracer for now
Fix html5bp test
version bump
Coerce all paths in sitemap to Pathname
Allow non-templates to have frontmatter. Closes #698
Copy binary files instead of rendering through MM. Closes #643. Closes #699
Make link_to ignore (and preserve) query string and anchor in URLs/paths.
Fix mail_to
Add a :query option to link_to to allow specifying query string
Catch bad URI errors
prep pre
Manually copy the file instead of asking Thor to do it
bump required sprockets
Corrected image_tag helper so that supported_extensions doesn't appear in the tag attributes

The modifications to add FastImage support made it that supported_extensions="[.png .jpg .jpeg .bmp .gif]" appeared in the img tag attributes upon building the project.