Add map for sections and pages, update queue to handle function without promise

lib/epubjs/core.js

@@ -499,4 +499,36 @@ EPUBJS.core.windowBounds = function() {
     height: height
   }
 
+};
+
+//https://stackoverflow.com/questions/13482352/xquery-looking-for-text-with-single-quote/13483496#13483496
+EPUBJS.core.cleanStringForXpath = function(str)  {
+    var parts = str.match(/[^'"]+|['"]/g);
+    parts = parts.map(function(part){
+        if (part === "'")  {
+            return '\"\'\"'; // output "'"
+        }
+
+        if (part === '"') {
+            return "\'\"\'"; // output '"'
+        }
+        return "\'" + part + "\'";
+    });
+    return "concat(\'\'," + parts.join(",") + ")";
+};
+
+EPUBJS.core.indexOfTextNode = function(textNode){
+  var parent = textNode.parentNode;
+  var children = parent.childNodes;
+  var sib;
+  var index = -1;
+  for (var i = 0; i < children.length; i++) {
+    sib = children[i];
+    if(sib.nodeType === Node.TEXT_NODE){
+      index++;
+    }
+    if(sib == textNode) break;
+  }
+  
+  return index;
 };