If you want to move from Clover you will have to do so manually. Over-installing v3.0.3 does not work.
Please read v4.0.0's changelog for the majority of changes.
Changelogs for v4.0.0 to v4.0.8
Added:
- #32, code tags on /g/ in the expanded reply menu.
Fixed:
- Old captcha is on by default.
- #27, non-relative time and post info are now based on your locale.
- #28, the ripple animation doesn't trigger on the refresh button's spin animation, so it can't spin the ripple with it.
- Image save dupes are allowed again, but with a time-string after them that should always be unique.