Added new files and moved directory
	new file:   misc/docs/num_theory
	new file:   misc/maths/Makefile
	renamed:    todo/misc/big_int.c -> misc/maths/big_int.c
	renamed:    todo/misc/nint.c -> misc/maths/big_int_mul.c
	new file:   misc/maths/divisors.c
	renamed:    todo/misc/fib.c -> misc/maths/fib.c
	new file:   misc/maths/lcm.py
	new file:   misc/maths/ndivisors.c
	renamed:    todo/misc/power_mod.c -> misc/maths/power_mod.c
	renamed:    todo/misc/power_mod.py -> misc/maths/power_mod.py
	new file:   misc/maths/prime_factors.c
	renamed:    todo/misc/sqrt.c -> misc/maths/sqrt.c
	renamed:    create_file.sh -> misc/scripts/create_file.sh
	renamed:    todo/misc/fib.py -> misc/scripts/fib.py
	renamed:    todo/misc/gen.py -> misc/scripts/gen.py
	renamed:    todo/misc/mis.py -> misc/scripts/mis.py
	renamed:    todo/misc/per.py -> misc/scripts/permutation.py
	new file:   misc/scripts/random.py
	new file:   misc/scripts/run
	deleted:    todo/misc/factors.c