implemented cityblock distance and his test
fixing function test
implemented Minkowski distance and his test
implemented chebyshev distance and his test
implemented sorensen distance and his test
implemented gower distance and his test
implemented soergel distance and his test
implemented kulczynski distance and his test
implemented canberra distance and his test
implemented lorentzian distance and his test
implemented intersection distance and his test
implemented Wave Hedges distance and his test and add a last test in Intersection distance
implemented Czekanowski distance and his test
implemented Motyka distance and his test
implemented Kulczynski similarity and his test
implemented Ruzicka similarity and his test
implemented Tanimoto similarity and his test
adding a new cas un tanimoto test
adding some child similatys
implemented inner product similarity and his test