Closes #820

added ARAnalytics to broke specs

fixed a link in the changelog

* master:
  Release 0.16.4
  [CHANGELOG] Update for 0.16.4

Conflicts:
	CHANGELOG.md
	Gemfile.lock
	lib/cocoapods.rb

* master:
  Rewrite a spec that expects a certain error to be raised.
  Add explicit flattening option to Downloader:Http

Conflicts:
	lib/cocoapods/downloader/http.rb
	spec/unit/http_spec.rb

* master:
  [Gemspec] Fix for Ruby 2.0.0-p0

Conflicts:
	cocoapods.gemspec

See https://bugs.ruby-lang.org/issues/6702