[Stk] New release (version 4.4.4)

[Gary Scavone]

Hi all,

I just posted a new release (4.4.4) of STK.  Updates include:

- New FreeVerb class (thanks to Greg Burlet)
- New Guitar class
- New electric guitar project
- Updated versions of RtAudio and RtMidi
- Cleaned / revised Shakers class
- Bug fix in LentPitShift
- Bug fix in Echo constructor
- Bug fix in FileWvIn (file size when chunking)
- Bug fix in StkFrames copy constructor

Happy programming!

--gary