An optional 200ms fading animation is added, which happens when the state of a button-like widget is changed by mouse. The resulting visual effect depends on the active theme.
It is available as a checkbox in Kvantum Manager → Configure Active Theme → Compositing & Animation, and is enabled for some themes.
Also an Oxygen-like theme (KvOxygen) is added. Oxygen was for Qt as Adwaita is for GTK+. It feels good to have it back in a more elegant form ;)
There are two 64-bit deb packages for download, one for Debian Testing and the other (with ubuntuLTS in its name) for Ubuntu LTS.