Ignores a non-english character after a character represented by two letters

[anschutz]

The function ignores a non-english character following the one that produces two letters (Æ, Щ, Ю).
slugg('ÆØ') returns 'ae', although slugg('ÆO') returns 'aeo'.

[bengourley]

hmm I guess the problem would be here, as the loop caches the length of the initial string…

slugg/slugg.js

Lines 43 to 47 in 420e55f

	for (var i = 0, len = string.length; i < len; i++) {
	if (chars[string.charAt(i)]) {
	string = string.replace(string.charAt(i), chars[string.charAt(i)])
	}
	}