Mon Feb 26 17:30:26 +0545 2018

- Add a Boolean argument class?

    Term::CLI::Argument::Bool->new(
        name  => 'bool',
        true  => [qw( true  on  yes )],
        false => [qw( false off no  )],
    );

- Add "min_length", "max_length" (and "length") to
  the String class:

    Term::CLI::Argument::String->new(
        name   => 'character',
        length => 1,
    );
