UTF-8 in multiline strings bug

[Ronef]

This example code:

$hjsonParser->parse(
	'{
		content:
			\'\'\'
			←→±≠Я
			\'\'\'
	}'
);

Throws:

Bad multiline string at line 5, 1 >>> ''' } ...

[trobro]

Has been fixed, perhaps by #26. Will add test case.