Bump to use ActiveRecord and ActiveSupport 4.2.1

 - The registering of citext is no longer required because Rails 4.2
   added support for it in rails/rails#12523.
 - Also Rails 4.2 has locked minitest version to 5.5.1 so removed
   locking it to lower version in test_helper.

Gemfile

@@ -2,8 +2,8 @@ source "https://rubygems.org"
 
 ruby "2.2.1"
 
-gem 'activesupport', '~> 4.1.4'
-gem 'activerecord', '~> 4.1.4'
+gem 'activesupport', '~> 4.2.1'
+gem 'activerecord', '~> 4.2.1'
 
 gem 'bugsnag'
 gem 'faraday'

Gemfile.lock

@@ -1,24 +1,24 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (4.1.6)
-      activesupport (= 4.1.6)
+    activemodel (4.2.1)
+      activesupport (= 4.2.1)
       builder (~> 3.1)
-    activerecord (4.1.6)
-      activemodel (= 4.1.6)
-      activesupport (= 4.1.6)
-      arel (~> 5.0.0)
-    activesupport (4.1.6)
-      i18n (~> 0.6, >= 0.6.9)
+    activerecord (4.2.1)
+      activemodel (= 4.2.1)
+      activesupport (= 4.2.1)
+      arel (~> 6.0)
+    activesupport (4.2.1)
+      i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
+      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.3.6)
     approvals (0.0.16)
       nokogiri (~> 1.6)
       thor (~> 0.18)
-    arel (5.0.1.20140414130214)
+    arel (6.0.0)
     backports (3.6.3)
     bootstrap-sass (3.3.0.1)
       sass (~> 3.2)
@@ -71,8 +71,8 @@ GEM
     httparty (0.13.1)
       json (~> 1.8)
       multi_xml (>= 0.5.2)
-    i18n (0.6.11)
-    json (1.8.1)
+    i18n (0.7.0)
+    json (1.8.2)
     kss (0.5.0)
     launchy (2.4.2)
       addressable (~> 2.3)
@@ -84,7 +84,7 @@ GEM
     method_source (0.8.2)
     mime-types (2.4.3)
     mini_portile (0.6.0)
-    minitest (5.4.1)
+    minitest (5.5.1)
     minitest-capybara (0.7.1)
       capybara (~> 2.2)
       minitest (~> 5.0)
@@ -154,7 +154,7 @@ GEM
     term-ansicolor (1.3.0)
       tins (~> 1.0)
     thor (0.19.1)
-    thread_safe (0.3.4)
+    thread_safe (0.3.5)
     tilt (1.4.1)
     timecop (0.7.1)
     timers (1.1.0)
@@ -171,8 +171,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord (~> 4.1.4)
-  activesupport (~> 4.1.4)
+  activerecord (= 4.2.1)
+  activesupport (= 4.2.1)
   approvals
   bootstrap-sass
   bugsnag

lib/exercism.rb

@@ -46,7 +46,6 @@
 
 require 'db/connection'
 DB::Connection.establish
-require 'exercism/active_record_citext'
 
 class Exercism
   def self.root

test/test_helper.rb

@@ -3,7 +3,6 @@
 ENV['RACK_ENV'] = 'test'
 require 'simplecov' if ENV['COVERAGE']
 
-gem 'minitest', '=5.4.1'
 require 'minitest/autorun'
 require 'minitest/pride'
 require 'pry'