1.5.2

New features

• feat(i18n): add Dutch translation #563
• feat(i18n): Russian import (#565)
• feat(comment): add gitalk

Changes

• feat(comment): update valine comment version (#558 #573 )
• style: compress the search code
• feat(icons): embedded the material_icons
• refactor: remove combo support from lsloader
• refactor(head): meta info

Bugs fixed

• fix(comment): disqus_click button issue
• fix(livere): add id for ls-javascript tag #546
• fix(#553)
• fix(gallery): remove css async load

BREAKING CHANGES

# Comment Systems
# Available value of "use":
#     disqus | disqus_click | changyan | livere | gitment | gitalk | valine
comment:
  use:
  shortname: # duoshuo or disqus shortname
  changyan_appid:
  changyan_conf:
  changyan_thread_key_type: path
  gentie_productKey:
  gitment_repo:   # git repo of the hexo
  gitment_owner:  # git repo's owner
  gitment_client_id:  # github app client id 
  gitment_client_secret :  # github app client secret 
  valine_leancloud_appId: # leancloud application app id
  valine_leancloud_appKey: # leancloud application app key
+ valine_notify: false # valine mail notify (true/false) https://github.com/xCss/Valine/wiki
+ valine_verify: false # valine verify code (true/false)
+ valine_placeholder: # valine comment input placeholder(like: Please leave your footprints )
+ gitalk_repo: # git repo of the hexo
+ gitalk_owner: # git repo's owner
+ gitalk_client_id: # github app client id 
+ gitalk_client_secret: # github app client secret