Log Message:
p5-MailTools: Update to 2.21

version 2.21: Tue 21 May 16:26:30 CEST 2019

	Fixes:
	- fix metadata [Mohammad S Anwar]

	Improvements:
	- add more to the README
	- add Mail::Mailer option StartSSL for smtp backend
	  rt.cpan.org#125871 [Guilhem Moulin]
	- deprecate Mail::Mailer backend smtps
	- document need for escaping docs for Mail::Send
	  rt.cpan.org#129627 [Jonathan Kamens]
	- document limit on parameters for Mail::Send::new()
	  rt.cpan.org#129633 [Sven Neuhaus]