update version

config/danbooru_default_config.rb

@@ -4,7 +4,7 @@ module Danbooru
   class Configuration
     # The version of this Danbooru.
     def version
-      "2.15.1"
+      "2.15.2"
     end
 
     # The name of this Danbooru.

test/test_helper.rb

@@ -1,7 +1,14 @@
 ENV["RAILS_ENV"] = "test"
 
-require 'simplecov'
-SimpleCov.start 'rails'
+if ENV["SIMPLECOV"]
+  require 'simplecov'
+  SimpleCov.start 'rails' do
+    add_filter ".bundle"
+    add_filter "script/"
+    add_filter "test/"
+    add_filter "config/"
+  end
+end
 
 require File.expand_path('../../config/environment', __FILE__)
 require 'rails/test_help'