Update parsers

app/src/main/java/org/koitharu/kotatsu/utils/ext/StringExt.kt

@@ -2,4 +2,13 @@ package org.koitharu.kotatsu.utils.ext
 
 inline fun String?.ifNullOrEmpty(defaultValue: () -> String): String {
 	return if (this.isNullOrEmpty()) defaultValue() else this
+}
+
+fun String.longHashCode(): Long {
+	var h = 1125899906842597L
+	val len: Int = this.length
+	for (i in 0 until len) {
+		h = 31 * h + this[i].code
+	}
+	return h
 }