A new version is available on Google Chrome Store and will be automatically upgraded to all the users. If you are a new user, you can download the Jira Server or Jira Cloud plugin here
The new version is for Jira Cloud (for extensions *.jira.com and *.atlassian.net) and Jira Server!!
The code has been cleaned and now is faster.
The columns in the Kanban boards are now transparent and the background picture is more visible!!
By MrAddon
Some pictures: