User wave tables

[baconpaul]

Discord user auxmux from nyms and elsewhere

Suggested single cycle waveform as an operator

Anyway the way to do it I think is

1. Intro a few user table spots
2. On patch load zero them out if the patch contains no user tables
3. Make a load from cycle wave into one of those tables probably as an extension of the type menu
4. Save in patch
5. On load intern up to 8192 and try your best to guess derivatives at the points probably with a simple four point interp at outset and hope
6. Voila