Could we please add some type cast in cluster.h and dirent.h, so that compiler implicit type conversion warning can be suppressed?

Changing the following line could fix this problem, though it might not be the best solution.

cluster.h, line 74:
size_type getCount() const { return (size_type)offsets.size() - 1; }

cluster.h, line 77:
size_type getSize() const { return (size_type)offsets.size() * sizeof(size_type) + (size_type)data().size(); }

dirent.h, line 83:
unsigned ret = (isRedirect() ? 12 : 16) + (unsigned int)url.size() + (unsigned int)parameter.size() + 2;