Remove active_support from the development dependancies.

liquid.gemspec

@@ -26,5 +26,4 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'stackprof' if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.1.0")
   s.add_development_dependency 'rake'
-  s.add_development_dependency 'activesupport'
 end

performance/benchmark.rb

@@ -1,4 +1,3 @@
-require 'rubygems'
 require 'benchmark'
 require File.dirname(__FILE__) + '/theme_runner'
 

performance/shopify/database.rb

@@ -1,6 +1,6 @@
 require 'yaml'
-module Database
 
+module Database
   # Load the standard vision toolkit database and re-arrage it to be simply exportable
   # to liquid as assigns. All this is based on Shopify
   def self.tables

performance/shopify/json_filter.rb

@@ -1,7 +1,9 @@
+require 'json'
+
 module JsonFilter
 
   def json(object)
-    object.reject {|k,v| k == "collections" }.to_json
+    JSON.dump(object.reject {|k,v| k == "collections" })
   end
 
 end

performance/theme_runner.rb

@@ -6,11 +6,6 @@
 # Shopify which is likely the biggest user of liquid in the world which something to the tune of several
 # million Template#render calls a day.
 
-require 'rubygems'
-require 'active_support'
-require 'active_support/json'
-require 'yaml'
-require 'digest/md5'
 require File.dirname(__FILE__) + '/shopify/liquid'
 require File.dirname(__FILE__) + '/shopify/database.rb'
 
@@ -81,6 +76,3 @@ class ThemeRunner
     end
   end
 end
-
-
-