Support rails versions greater than 6.0.0

Author: lgebhardt

Gemfile

@@ -8,22 +8,20 @@ end
 
 version = ENV['RAILS_VERSION'] || 'default'
 
+platforms :ruby do
+  if version.start_with?('4.2', '5.0')
+    gem 'sqlite3', '~> 1.3.13'
+  else
+    gem 'sqlite3', '~> 1.4'
+  end
+end
+
 case version
 when 'master'
   gem 'railties', { git: 'https://github.com/rails/rails.git' }
   gem 'arel', { git: 'https://github.com/rails/arel.git' }
 when 'default'
   gem 'railties', '>= 6.0'
-when '6.0.0'
-  platforms :ruby do
-    gem 'sqlite3', '~> 1.4'
-  end
-
-  gem 'railties', "~> #{version}"
 else
-  platforms :ruby do
-    gem 'sqlite3', '1.3.13'
-  end
-
   gem 'railties', "~> #{version}"
 end