Ignore .cache by default in .gitignore
Improvements to the /__middleman/ metadata pages.

Includes formatting/styling changes to clarify the data being presented as well as align styling with middlemanapp.com. Also adds features and fixes to the sitemap view to show ignored files differently, hide redundant information, print data/options as a hash instead of as array pairs, and to list out available locals defined on a page.
Merge pull request #1229 from bhollis/metadata

Improvements to the /__middleman/ metadata pages
Webrick should not do reverse DNS lookups

This prevents Middleman server from being terribly slow over network. Closes #1118.
Merge pull request #1232 from lolmaus/patch-1

Webrick should not do reverse DNS lookups
Include the destination_path in the instrumentation payload.
Merge pull request #1234 from kaleworsley/more_details_in_the_instrumentation_payload

Include the destination_path in the instrumentation payload.
Update haml and sass deps
Notify slack
Unvendor padrino
bump uglifier dep
revert back to sass 3.2 and stable compass
bump copyright
bump execjs dep
Add Karl to authors list
arbua jruby support
use compass-import-once
bump to include sass fix
Print correct IP and mobile testing support

Address `0.0.0.0` wasn't valid on windows, use localhost instead
Finds a local IP that will also allow the development server to run on mobiles
CLI: Always require 'middleman-core/version'

The `init` command will fail if the `VERSION` was not required because
it is needed for the Gemfile generation. Unfortunately this was not
catched by the specs because the specs require the version and the child
process is not correctly reset.

I was not able to change this easily :-(