Changes since 2.5.8: 66132c7
[Add-on Manager (about:addons)]
- (tweak) Fx68+: add-ons manager > alternative appearance
- (new) Fx68+: add-ons manager > replace button labels with icons (affects all buttons on add-ons page)
- (new) Fx68+: add-ons manager > show buttons on hover over add-on card only