Support for German number format

[markwiesemann]

Hi, I just played around with this library. While many things were easy to use (or to figure out from the documentation), I couldn't find a solution to handle the German number format properly in combination with the range element. English number format: 10.5 German number format: 10,5 (comma instead of dot for the decimal separator) I've added the "data-sort" attribute to each cell of the respective column. Sorting works fine then but the range element doesn't consider the attribute. Is there another attribute available or planned? Is there any other solution yet?