Added a funciton that calculates everything needed for spherical harmonics

Samo Penic

2018-07-02 f977e8fe32b6a1a2ae85662ab35fd7c9f647cc3e

 src/general.h

@@ -201,6 +201,7 @@

struct ts_triangle_list{
    ts_uint n;
   ts_double a0;
    ts_triangle **tria;
};
typedef struct ts_triangle_list ts_triangle_list;