allow alternate uniform RNG
allow alternate uniform RNG

eddelbuettel/annoy,codeaudit/annoy,eddelbuettel/annoy,LongbinChen/annoy2,spotify/annoy,eddelbuettel/annoy,BeifeiZhou/annoy,Houzz/annoy2,spotify/annoy,tjrileywisc/annoy,spotify/annoy,pombredanne/annoy,LongbinChen/annoy,spotify/annoy,pombredanne/annoy,codeaudit/annoy,eddelbuettel/annoy,LongbinChen/annoy,subu-cliqz/annoy,subu-cliqz/annoy,guitarmind/annoy,LongbinChen/annoy2,BeifeiZhou/annoy,codeaudit/annoy,LongbinChen/annoy,LongbinChen/annoy2,guitarmind/annoy,tjrileywisc/annoy,Houzz/annoy2,subu-cliqz/annoy,tjrileywisc/annoy,BeifeiZhou/annoy,tjrileywisc/annoy,guitarmind/annoy,Houzz/annoy2,pombredanne/annoy,subu-cliqz/annoy,pombredanne/annoy