Update support:
We added support to:

Vuze 5.7.4-5.7.5
qBittorrent 3.3.16
kTorrent 5.0-5.1

Removal support:
We no longer support:
Rufus
uTorrent 1.6.x, 1.8 beta
Deluge 0.x
Transmission 1.x
Azureus 2.x, 3.x
MLDonkey
SymTorrent