=encoding utf8

=head1 Name

Mo::chain - Adds the chain feature to Mo's has

=head1 Synopsis

    package Foo;

    use Mo qw'chain';
    has first  => ( chain => 1 );
    has second => ( chain => 1 );

    Foo->new->first('1')->second('2');

=head1 Description

Adds the chain parameter to has. If you set it to a true value, the accessor
will return the class instance if values are set, instead of the value itself.
As a result, accessors can be chained.

=cut