Fix typo.
typedef std::complex<Real> Complexr; in Math.hpp
Add reference to interpolation spline36 and sinc256.

Those are interpolation methods that use 6 by 6 points around the center
point, or 16 by 16 points points around the interpolated point. They can
be further expanded to 1D or 3D. It is used here to allow drawing in
OpenGL more points than the plotted wavefunction has - to avoid display
problems which may occur in some cases.
First version of test script (not working yet).
Add analytical wavepackets to allow testing (unfinished).