minor #539 Update Swift.php (NAYZO)
minor #539 Update Swift.php (NAYZO)

This PR was merged into the 5.3-dev branch.

Discussion
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Update Swift.php

It's more clear and proper this way to put all class constants on top.

Commits
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ec52cfb Update Swift.php

jamesggordon/swiftmailer,gencer/swiftmailer,Dubz/swiftmailer,Chhunlong/swiftmailer,robertklein/swiftmailer,kuslahne/swiftmailer,swiftmailer/swiftmailer,deguif/swiftmailer,voku/swiftmailer,c960657/swiftmailer,michabbb-backup/swiftmailer,michabbb-backup/swiftmailer,zghosts/swiftmailer,kuslahne/swiftmailer,Rotzbua/swiftmailer,swiftmailer/swiftmailer,robertklein/swiftmailer,handautsav/swiftmailer,deguif/swiftmailer,Rotzbua/swiftmailer,tweakers-dev/swiftmailer,gburyakovsky/swiftmailer,gburyakovsky/swiftmailer,denpamusic/swiftmailer,jamesggordon/swiftmailer,fvosberg/swiftmailer,c960657/swiftmailer,denpamusic/swiftmailer,fvosberg/swiftmailer,handautsav/swiftmailer,Chhunlong/swiftmailer,voku/swiftmailer,tweakers-dev/swiftmailer,Dubz/swiftmailer,papagel/swiftmailer,gencer/swiftmailer,zghosts/swiftmailer,papagel/swiftmailer