AudioSampleBuffer double support

Hey guys, 

The AudioSampleBuffer appears to be float only. Is there a technical reason why it couldn't support double too?

I assume that most of the modern DAW's, for an example, support double throughout!?? 


FYI there'll be a new DSP module coming for V4, and although it won't add double support to the AudioSampleBuffer it will provide a lot of new templated buffer classes..

Thanks both!