Slack Custom Emoji Manager

Add the function to bulk add, remove, and download emoji to Slack./r/nAdd the following features to Slack's custom emoji management page.
– Add more emoji at once
– Delete all emoji at once
– Download all emoji (zip)

=== Change Log ===
・v1.2.1 – bugfix
Fixed adding and deleting emoji to work.

・v1.2.0
Popup is released!
You can now access the emoji customization faster.