Short analysis script

Script to run analysis of the random sample dictionary
Updating corpus & network programs

Tweaks to the way that the _deriv.sqlite database (which includes the
corpus & some data to work out relationships on basis of genre) is
produced and the way that a graph of genre relationships is generated
from it.
New snowball sampling programs

outward_waves.py is like forward_waves.py except that it works in both
directions: from x to x's followers and x's followees, then to their
followers and follows. Grabs ALL followers and follows, within limits
of the SoundCloud API (just over 8000 of each).

Note that this takes AN EXTREMELY LONG TIME to run, because it involves
a LOT of API calls. Tried it with a guy with about 4000 followers and
no follows; it took all night to get all his followers and all their
followers and followees.
Produce genre-based stats & corpora

Outputs corpora & stats based on a defined set of genres and families
('communities') of genres (both obtained using genre_relationships.py
and genre_network_sample.py).