feat: 耕作履歴ページ作成（#112） (#177)

#112 現在ページの表示を太く

#112 完了

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #177

backend/config/routes.rb

@@ -4,6 +4,7 @@ Rails.application.routes.draw do
   get 'tags/autocomplete', to: 'tags#autocomplete'
   get 'tags/name/:name', to: 'tags#show_by_name'
   get 'posts/random', to: 'posts#random'
+  get 'posts/changes', to: 'posts#changes'
   post 'posts/:id/viewed', to: 'posts#viewed'
   delete 'posts/:id/viewed', to: 'posts#unviewed'
   get 'preview/title', to: 'preview#title'