0.2.0
 - Bug fixes
0.1.0:
 - Now have roughly O(n log n) process for building graph instead
   of the brute force O(n^2) process
0.0.2:
 - Minor update to remove zeros from abstract syntax
   and to use unary relations (number of nonzeros)
   as well as binary relations
0.0.1:
 - First edition of FEarari
