Converts old userdata yml files to new UUID format, with lots of options.
Usage: essentials-uuid-converter [options] userdataDir outputDir
Options:
-h, --help output usage information
-V, --version output the version number
-t, --timestamp [timestamp] Fetch UUIDs at a specific (UTC) timestamp
-i, --interface [iface] Uses all IPs on specified interface to make API requests (to avoid rate limit)
-w --workers [number] Number of workers to run simultaneously (default 5)
-c --cache Create/load UUID cache file to allow resuming cancelled conversions
-4 Only use IPv4