Friendlier error message when a non-default layout is not in the layouts directory.
Merge pull request #284 from bhollis/layout

Bad error message for extensionless files
Make automatic helpers smarter. Fixes #510
Merge pull request #370 from bhollis/master

Syntax errors lock up Middleman
Add tests for more implied extensions
Merge branch 'master' of github.com:middleman/middleman
version bump [ci skip]
bump submodule [ci skip]
Add Middleman::Util.all_files_under to get a recursive listing of files beneath a path, follows symlinks. Fixes #515
Use therubyrhino for jruby execjs tests
Update execjs dep, hopefully fixing therubyrhino on JRuby
Catch JRuby/Coffee exception correctly
Fix gzip extension
Don't allow people to proxy a path to itself, or to another proxy.
Fix all_files_under - not all non-files are directories
Ignore emacs temporary files
Fiter out annoying "Could not determine content-length of response body." messages from verbose logging
Make :automatic_image_sizes work for absolute image paths
Use middleman's image_tag and link_to helpers from within Redcarpet markdown
Merge pull request #520 from bhollis/image_sizes

Make :automatic_image_sizes work for absolute image paths