added support for filter and custom backend in charmander-vector
added support for filter and custom backend in charmander-vector

att-innovate/charmander,att-innovate/charmander,att-innovate/charmander,edwardt/charmander,edwardt/charmander,chen0031/charmander,chen0031/charmander,edwardt/charmander,chen0031/charmander