parse values in float arrays as floats not strings

javascript numbers are 64-bit floating numbers

lib/types/textParsers.js

@@ -104,6 +104,9 @@ var parseBigIntegerArray = function(val) {
 var parseFloatArray = function(val) {
   if(!val) { return null; }
   var p = arrayParser.create(val, function(entry) {
+    if(entry !== null) {
+      entry = parseFloat(entry);
+    }
     return entry;
   });