Version 2.2.0

This release should actually have the timer object promised in 2.1.0.

Version 2.1.0

Added a non-blocking timer object and generally cleaned up comments.

Version 2.0.1

As it turns out, Knob.value() was not returning an actual value. This, of course, was in keeping with the minimal aesthetic of BobaBlox, however, ultimately in conflict with it's utilitarian nature. So, now, an actual value is actually returned.

Version 2.0.0

Added Photocell and Speaker elements.
Minor tweaks to make it compatible with Arduino Library Manager.