Avoid double-require bug Module::Pluggable induces.

Because `use Color::Library` invokes before the library finishes ....
 -which does that `use Module::Pluggable` and loads all its plugins before the library finishes
 -which involves invoking appropos of

      Foo.pm

      require Foo;

      1

and that has the side effect that the subs are compiled twice :/

So this hacks around this by invoking `use Moo` first, which sets
$INC{C/L/D/XKCD} = 1

And that prevents require attempting to require it a second time.

lib/Color/Library/Dictionary/XKCD.pm

@@ -10,8 +10,8 @@ our $VERSION = '1.000000';
 
 # AUTHORITY
 
-use Color::Library 0.021;
 use Moo qw( extends );
+use Color::Library 0.021;
 use File::ShareDir qw( dist_file );
 extends 'Color::Library::Dictionary';