Faders should be able to fade in time via syntax

This is mentioned is a bug report from 4 years ago:  

Fader 1/1 at Full Time 5 *

Fader 1/1 at 50 Sneak 5 *

Both excecute the fader move in 0 time.

I would like to be able to specify fade times in syntax (targeting Faders specifically, rather than the underlying content target)

Alternately, if faders are not going to fade in time specified in syntax, it should at least throw a syntax error.

Thanks!