overtone/overtone — pull request #240 by rogerallen (2013-06-22 15:04:29+00:00)
Title: Fix bug in guitar strum direction handling.  

Both :up and :down sounded the same! They were both playing "down". How did I not notice this before?

Also update code to be more tolerant of odd-sized vectors when specifying frets via the-chord. For example, a vector of size 3 will just play the top 3 strings, a vector too large will just be truncated.