Use of bitwise xor in filterFunction causes bugs & contradicts docs

[countergram]

According to the API docs, filterFunction "Filters records such that the specified function returns truthy when called with this dimension's value"

However, it uses a bitwise xor (^) as a comparison operator which makes otherwise "truthy" values other than 1/0/true/false cause undesired behavior (e.g. adding items that are already present).

Fix: Force the output of the given function to true or false rather than relying on its truthyness. I think using ? true : false works?

Reference: http://stackoverflow.com/questions/25083383/custom-text-filter-for-dc-js-datatable/25129514#25129514

[jasondavies]

Thanks! Fixed in version 1.3.8.