Rename public max/min functions
Add new Vibrance tool

Courtesy of audioglider - many thanks!
Start reorganization of Processor module

WIP

The processor module has no discernible order at present.  It has been
hacked apart many, many times as new features have been added or
removed, so the layout most closely resembles a menu order from several
years ago.

I am currently working on reordering the module to match the newest menu
layout, but as this work is not mission critical, I'll only be tackling
it in bits.