Merge pull request #102 from re-born/tweak

Tweak notification messages
Arrange notification for slack
Merge pull request #103 from re-born/notification

Arrange notification for slack
Notify comment to slack
Merge pull request #105 from re-born/notification

Notify comment to slack
Activate caching
Merge pull request #106 from re-born/tweak

Control logging
Merge pull request #107 from re-born/improve-performance

Activate caching
Install lazyload
Add placeholder for thumbnail
Merge pull request #108 from re-born/improve-performance

Install lazyload
Add link to tags