Stopped working in latest nightly. Rated 5 out of 5 stars

Due to this bugfix, Stylish stopped working.
https://bugzilla.mozilla.org/show_bug.cgi?id=1220564

Temporary solution seems to be, by changing the line (in components\stylishStyle.js) :

return [toHexString(hash.charCodeAt(i)) for (i in hash)].join("");
-> Change to Line Below ->
return Array.from(hash, (c, i) => toHexString(hash.charCodeAt(i))).join("");

This review is for a previous version of the add-on (2.0.4). 

Rated 3 out of 5 stars

(BUG)

Stylish 2.0.2 (latest)
Firefox nightly v39

After manually adding a script and saving it.
The "Edit" button in the addon window is doing nothing, you can't edit your just made script.

This review is for a previous version of the add-on (2.0.2.1-signed.1-let-fixed). 

Rated 3 out of 5 stars

Really missing some vital functionality like an Import/Export button.

This review is for a previous version of the add-on (1.3.2.1-signed).