fix: better memory management ( Z_Free() instead of free() )

Signed-off-by: Stephen L. <lrq3000@gmail.com>
fix: big memory leaks.

Signed-off-by: Stephen L. <lrq3000@gmail.com>

Conflicts:
	README.md
fix: Fixed the memory leaks for good! Thank's valgrind!

Signed-off-by: Stephen L. <lrq3000@gmail.com>