Auto version check.

Virus Total Results
MD5: a6a65563a1b08b1b121d6bed5d3be03e
SHA-256: 18453a53fc4fb710a8cab3be6f125a99cf7bb00d699eb119c8072729d1895d6c
SHA-3: 6af7e6ff4bd1d105dda13cabe7f15ccfaca15d52cb2c2c6b75917ab08b997bae

Track the latest version, and warn if running on an out of date version.