continentalness testing

compile with gcc xoroLib.c crunchLib.c continentalnessLib.c omission.c -lm -lpthread -Ofast -march=native -mtune=native -o omission

code credits

https://github.com/Cubitect/cubiomes

https://github.com/nothings/stb/blob/master/stb_ds.h

thanks guys