Allow logging email subject and email body when setting email pretending mode to true.
Log email view names instead of email body when logging message
Use event dispatcher in Mailer class and fire an event when sending an email
Replacement for #3940
move swiftMailer registration into closure

Signed-off-by: Suhayb El Wardany <me@suw.me>
Add a space.
Merge pull request #3844 from letrunghieu/master

Allow logging email subject and email body when setting email pretending mode to true
Log transport for mail.
Fix bug. Update change log.
Merge branch '4.1'