[RFC][ACCEPTED] Flexible Heredoc and Nowdoc Syntaxes

Hi all, Voting has now ended, with both votes passing: - Indenting the closing marker and stripping the whitespace: 24 yes, 5 no - Removing the trailing newline requirement: 26 yes, 8 no Thanks to all who participated in the RFC discussion and voting. I will now make some touch-ups to the patch (as requested by Derick), and will then look into merging it into master and updating the language specification. Thanks, Tom