Create RationalVector in set property before passing value to swig.
Create RationalVector in set property before passing value to swig.

The python interface now returns a list of values and should be
able to take any kind of collection in set properties. Nonetheless,
proper typemappings should be added in future.

msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,retuxx/tinyspline,retuxx/tinyspline,msteinbeck/tinyspline,retuxx/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline