Merge pull request #82 from Livefyre/master

Merge pull request #13 from escherba/master
Merge pull request #83 from escherba/r_update

user operator map for interpreting config
Merge pull request #84 from escherba/r_update

allow either simhash or minhash sketches in minhash signer
make tests pass again
move add-on functionality to make include
allow SBP hashing
drop ti index from tests; use better seeds
use combine function instead of xor for banding
fix test once more
return to xor-ing
mshinglify should produce shingles of equal length
fix reqs
Merge pull request #85 from escherba/r_update

support more exotic n-grams
Merge pull request #16 from escherba/master

support more exotic n-grams