Merge pull request #7 from Livefyre/r_update

some (micro-) optimizations
Merge pull request #8 from escherba/r_update

add more doc-tests
Merge pull request #9 from escherba/master

parameterize seeds
Merge pull request #10 from escherba/master

update lflearn req
Merge pull request #78 from Livefyre/master

make up-to-date