New features related to implementing granular synthesis.

Completed the following:

* add poly~ object (receive~ #1_spigot_L, receive~ #1_spigot_R)
* embed rr_clip_audio.maxpat in rr_vine_movie
* add munger~ to rr_clip_audio.maxpat
* identify munger~ parameters for normal and zoom states
* add line objects to interpolate between munger~ settings