Add the ability to enclose multiple lines strings in `` quotes as in JS

[DarkRiDDeR]

I think it will be pretty good. What do you think?

[Abscissa]

Something like that would be nice, but its not part of the SDLang language. So it would make this library incompatible with the SDLang language, which would of course defeat the point.

However, you can already do something similar. It's described in the "String Literals" section archived here: http://semitwist.com/sdl-mirror/Language+Guide.html (Also mirrored here: https://github.com/Abscissa/SDLang-D/wiki/Language-Guide )

But it would be nice, so I will mark this with the "spec-v2" tag in case I end up forking the language.