Packaging DLLs for Windows
No functionality changes, just fix pypi dependency defs (require sf2file) / fix numpy ModuleNotFoundError.
Move hachiko to console_scripts
Install DLLs in PATH (C:\Windows\system32), due to Python's ctypes module find_library doesn't work as Windows's default DLL loader, and it won't use DLLs inside current workdir
TBD: Patch findLibrary logics