discord-2.2.0 released, backward compatible for version 2.*

This release is backward compatible with any of the other version 2 releases.

Reworked the split beat functionality for chronaural and pulse voices. Functions mostly the same, but have a lot more faith in it now. Found and fixed a bug in the base chronaural voice that had right channel at half the volume of left channel.

Chronaural now can slide on sin threshold.

Fixed a bug in the fm voice that prevented it from working when there was no phase shift between the channels.

Changed the phase voice so that phase shifts of arbitrary size are now OK. They were restricted to 360 degrees.

Added two new scripts to the included scripts. They are variations of nightcap, with the 20 beats spread from low delta to low beta. Only 10 minutes long, quick and easy to try them. ;-)

Rationalized the threading, removing it from status printing.

Add verbose option so detailed status can be printed. Changed the every option to allow decimal values so detailed status can be printed more frequently for debugging.