This module provides a simple way to align a text on the left, right or
center. If left & right are easy to achieve (see "sprintf()"), i found no
cpan module that achieved a simple text centering. Well, of course,
Perl6::Form provides it, but it's incredibly slow during startup / destroy
time. And Text::Reform was segfaulting during destroy time.
Hence this module, which aims to provide only those 3 methods.