Description:

Params::Check is a generic input parsing/checking mechanism.

It allows you to validate input via a template. The only requirement
is that the arguments must be named.

Params::Check can do the following things for you:

=over 4

=item *

Convert all keys to lowercase

=item *

Check if all required arguments have been provided

=item *

Set arguments that have not been provided to the default

=item *

Weed out arguments that are not supported and warn about them to the
user

=item *

Validate the arguments given by the user based on strings, regexes,
lists or even subroutines

=item *

Enforce type integrity if required

=back

Most of Params::Check's power comes from its template, which we'll
discuss below: