teensy-audio-tuner/revision.md

><b>Updated (10/12/15 v2.2)</b><br>
* Fixed yin cpu usage throttling code in update function.<br>
* Function initialize second param takes a float (0.0 - 1.0).<br>
* Fix many spelling and grammar errors. :(<br>

><b>Updated (10/11/15 v2.1)</b><br>
* Made yin implementation faster and more reliable.<br>
* Improved user interface.<br>

><b>Updated (7/10/15 v2.0)</b><br>
* First commit