Merge branch 'ew/send-email-drop-data-dumper' into maint

Code clean-up.

* ew/send-email-drop-data-dumper:
  send-email: do not load Data::Dumper

git-send-email.perl

@@ -23,7 +23,6 @@ use POSIX qw/strftime/;
 use Term::ReadLine;
 use Getopt::Long;
 use Text::ParseWords;
-use Data::Dumper;
 use Term::ANSIColor;
 use File::Temp qw/ tempdir tempfile /;
 use File::Spec::Functions qw(catfile);