Original Birds Firefox Addon V5
"Checkmark Fixes Update"
- Fixed a bug where hiding blue checkmarks could cause Twitter to fail to load.
- Fixed bugs where checkmarks would erroneously show across user pages.
- Fixed bugs related to checkmark ordering.
- Fixed a display glitch by aligning customized text.
- Added DomPurify to add another layer of defense.
- Please note that HTML is obtained from twitter.com over HTTPS after install to avoid any copyright issues.
- This extension only uses HTML from Twitter to render checkmarks on Twitter.

Original Birds Firefox Addon V4
"Advanced Settings Update"
-Added appearance settings.
-Users can now customize checkmark appearance in three ways: color, text, and custom images.
-Added advanced settings tab.
-Advanced settings include checkmark reloading and setting variables related to performance.
-Bug fixes with many being related to visual alignment issues (e.g. icons slightly higher).

Original Birds Firefox Addon v3
-Fixed a bug where legacy checkmarks were not showing up for new users (unless they clicked the extension in the unified list again after granting permission).
-Control panel is now kept open and updated after granting permission. (Before, this window was made to close and that was causing issues.)

Original Birds Firefox Addon v2
-Added a dedicated control panel (popup) opened by clicking extension in the unified list.
-Moved permission request trigger to button on the control panel.
-Added ability to turn on and off Twitter Blue checkmarks.
-Checkmarks are now working for Twitter embeds (by changing our script to target all frames).