Merge pull request #2 from meksh/patch-1

Handle casting into Int64

EdgeA11yTools.cs

@@ -330,6 +330,12 @@ namespace Microsoft.Edge.A11y
             }
             catch { }
 
+            try
+            {
+                return (Int64)o;
+            }
+            catch { }
+            
             try
             {
                 return (double)o;
@@ -345,4 +351,4 @@ namespace Microsoft.Edge.A11y
             throw new InvalidCastException("Cannot parse to int, double, or string");
         }
     }
-}
+}