Allow ' raw strings to contain literal newlines (#107)

Fixes #8

justfile

@@ -92,7 +92,7 @@ quine: create
 	diff tmp/gen1.c tmp/gen2.c
 	@echo 'It was a quine!'
 
-quine-text = "int printf(const char*, ...); int main() { char *s = \"int printf(const char*, ...); int main() { char *s = %c%s%c; printf(s, 34, s, 34); return 0; }\"; printf(s, 34, s, 34); return 0; }"
+quine-text = 'int printf(const char*, ...); int main() { char *s = "int printf(const char*, ...); int main() { char *s = %c%s%c; printf(s, 34, s, 34); return 0; }"; printf(s, 34, s, 34); return 0; }'
 
 # create our quine
 create: