New templatized linked_list collection

Also updated tests to work with memory changes

src/tests/main.cpp

@@ -1,9 +1,9 @@
 #define CATCH_CONFIG_MAIN
 #include "catch.hpp"
 
-// kutil malloc/free stubs
 #include <malloc.h>
-namespace kutil {
-	void * malloc(size_t n) { return ::malloc(n); }
-	void free(void *p) { ::free(p); }
-}
+void * operator new (size_t n)					{ return ::malloc(n); }
+void * operator new[] (size_t n)				{ return ::malloc(n); }
+void operator delete (void *p) noexcept			{ return ::free(p); }
+void operator delete[] (void *p) noexcept		{ return ::free(p); }
+