Summary

A feature where any user can leave an emoji "reaction" to a comment, without generating an email notification.

Analysis

For active tickets, there can be a long string of comments and it becomes hard to navigate after a while. Some of these comments might just be +1s or affirmations. Being able to respond with an emoji character to a comment would be helpful to acknowledge something without generating email noise for everyone else who is subscribed and cluttering the comments.

Implementation

1. User mouses over a + button near edit and delete buttons in an issue comment
2. User given emoji search bar (similar to typing : in an issue now)
3. Searches and selects emoji "reaction", e.g. :100:
4. In opposite side from react/edit/delete buttons, a display of the emoji with a counter for number of times used, e.g. :100:x2

This is pretty similar to how it works in GitHub already except being able to select emoji instead of a limited few.