Use released arel

Gemfile

@@ -17,7 +17,6 @@ gem 'rack-cache', '~> 1.2'
 gem 'jquery-rails', github: 'rails/jquery-rails', branch: 'master'
 gem 'coffee-rails', '~> 4.1.0'
 gem 'turbolinks'
-gem 'arel', github: 'rails/arel', branch: 'master'
 
 gem 'sprockets-rails', '~> 3.0.0.beta3', github: 'rails/sprockets-rails', branch: 'master'
 

Gemfile.lock

@@ -27,13 +27,6 @@ GIT
     rack (2.0.0.alpha)
       json
 
-GIT
-  remote: git://github.com/rails/arel.git
-  revision: 899e8428c50c586e6c8d4884b542ac9fdf01e95f
-  branch: master
-  specs:
-    arel (7.0.0.alpha)
-
 GIT
   remote: git://github.com/rails/globalid.git
   revision: 4e74ec6bb60d735ef3c56080f9c9f1dee9cadaaf
@@ -108,7 +101,7 @@ PATH
     activerecord (5.0.0.alpha)
       activemodel (= 5.0.0.alpha)
       activesupport (= 5.0.0.alpha)
-      arel (= 7.0.0.alpha)
+      arel (~> 7.0)
     activesupport (5.0.0.alpha)
       concurrent-ruby (~> 1.0)
       i18n (~> 0.7)
@@ -139,6 +132,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     amq-protocol (2.0.0)
+    arel (7.0.0)
     backburner (1.2.0)
       beaneater (~> 1.0)
       dante (> 0.1.5)
@@ -332,7 +326,6 @@ DEPENDENCIES
   activerecord-jdbcmysql-adapter (>= 1.3.0)
   activerecord-jdbcpostgresql-adapter (>= 1.3.0)
   activerecord-jdbcsqlite3-adapter (>= 1.3.0)
-  arel!
   backburner
   bcrypt (~> 3.1.10)
   bcrypt-ruby (~> 3.0.0)

activerecord/activerecord.gemspec

@@ -24,5 +24,5 @@ Gem::Specification.new do |s|
   s.add_dependency 'activesupport', version
   s.add_dependency 'activemodel',   version
 
-  s.add_dependency 'arel', '7.0.0.alpha'
+  s.add_dependency 'arel', '~> 7.0'
 end

railties/lib/rails/generators/app_base.rb

@@ -221,7 +221,6 @@ module Rails
       def rails_gemfile_entry
         dev_edge_common = [
             GemfileEntry.github('sprockets-rails', 'rails/sprockets-rails'),
-            GemfileEntry.github('arel', 'rails/arel'),
             GemfileEntry.github('rack', 'rack/rack')
           ]
         if options.dev?