got rid of svd_embedding, there's a built-in function that does the same thing
added a couple simple helper functions
added a function to plot a sequence of point sets
added a function to plot a sequence of point sets radially
added a function to automatically wrap a point set around a circle
added a function get the values of a ring of quadratic integers on an integer level of the l-infinity ball
Merge branch 'master' of https://github.com/sampotter/matlab-utils