Reads through logfile and prints lines with suspiciously large holes.

Has two strategies:

print biggest hole in a given file

print all the holes larger than a given threshold

Usage:

USAGE:
    holes [OPTIONS] <--maxhole|--threshold <THRESHOLD>>

FLAGS:
    -h, --help       Prints help information
    -m, --maxhole
    -V, --version    Prints version information

OPTIONS:
    -f, --file <FILE>              Sets a logfile to read from. [default: -]
    -t, --threshold <THRESHOLD>    minimum hole length to report about (ms).