Fix bug where the user-provided tidyall class was not loaded

This fixes issue #43.

Author: shlomif

bin/tidyall

@@ -3,6 +3,7 @@ use Capture::Tiny qw(capture_merged);
 use Code::TidyAll;
 use Config;
 use Path::Tiny qw(cwd path);
+use Module::Runtime qw( use_module );
 use Getopt::Long;
 use strict;
 use warnings;
@@ -118,6 +119,8 @@ $params{iterations} = $iterations if $iterations;
 
 my $tidyall_class = $params{tidyall_class} || 'Code::TidyAll';
 
+use_module($tidyall_class);
+
 my ( $ct, @paths );
 
 if ($pipe) {