Speed up compilation

[Alex]

Is there any way to speed of compiling a project(in Visual D) 
that changes very little but has a lot of dependencies that do 
not change?

Seems like D is recompiling everything, and while it does it 
relatively fast, it's about 15+ seconds even if I just change a 
single character in the entire project such as a initial 
value(anything).

Is compiling to object files going to help(Visual D does not do 
this as far as I know)?

Ideally everything that doesn't change would not be recompiled.