Allow default alignment changes

Change-Id: I0815983f974c0a3d6919e973c65310ac30e93480
diff --git a/lib/Kalamar.pm b/lib/Kalamar.pm
index cd23dbf..462e9ba 100644
--- a/lib/Kalamar.pm
+++ b/lib/Kalamar.pm
@@ -328,12 +328,14 @@
   $self->defaults(
     items_per_page => 25,
     context => '40-t,40-t', # Before: 'base/s:p'/'paragraph'
+    alignment => 'left'
   );
 
   if (exists $conf->{defaults}) {
     my $def = $conf->{defaults};
-    $self->defaults(items_per_page => $def->{items_per_page}) if $def->{items_per_page};
-    $self->defaults(context => $def->{context}) if $def->{context};
+    foreach (qw!items_per_page context alignment!) {
+      $self->defaults($_ => $def->{$_}) if $def->{$_};
+    };
   };
 
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