bump to 1.9.1
bump to 1.9.1

spotify/annoy,eddelbuettel/annoy,tjrileywisc/annoy,eddelbuettel/annoy,spotify/annoy,tjrileywisc/annoy,pombredanne/annoy,pombredanne/annoy,pombredanne/annoy,spotify/annoy,spotify/annoy,eddelbuettel/annoy,pombredanne/annoy,tjrileywisc/annoy,eddelbuettel/annoy,tjrileywisc/annoy