Improvements for mixer

[x.iso]

I think it's a bit of a pain that mixer window cannot be resized. It would be fine even if you stuck with same proportions, just tie scaling parameter to window resize handler (if possible).

Also I would suggest option for docked mixer, but it would only fit in UI on the side panel (with horizontal faders).

[senso]

ok, in the v150 the Mixer-panel will be zoomable!
ps: also the toolbox;

[x.iso]

thanks!