Error building dfl on dmd 2.054

[simendsjo]

I've just added "default: assert(0)" on the switches, but I got an error 
I don't know how to solve:

tabcontrol.d(18): Error: class dfl.tabcontrol.TabPage use of 
dfl.control.Control.opEquals(Control ctrl) hidden by TabPage is deprecated

Any ideas? The best would of course be if the maintainer fixes the 
issues, but I don't know how long this will be.