allow single points represented by b-spline
allow single points represented by b-spline

pellaeon/tinyspline-example,msteinbeck/tinyspline,retuxx/tinyspline,msteinbeck/tinyspline,arneboe/tinyspline,pellaeon/tinyspline-example,retuxx/tinyspline,msteinbeck/tinyspline,arneboe/tinyspline,msteinbeck/tinyspline,retuxx/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline