Clean code in Makefile
Add some links in the readme
Comments
Test the long long QFT with composites
Switch from the buggy power_of_x_int to powm_int
Handle n%4=1 and n%4=3 properly (long long QFT)
Change line styles
Enable some tests
Remove old code
Work on check_all_params (GMP version)
Only test composites in check_all_numbers_long
Add stub for a test for power_of_x_int
Add some macros to helpers_int.h
Add some code for using GMP 64 bit multiplication function