ArrayFilters in MongoDB

Hello everyone,

At the moment Phalcon does not allow to use the filterArrays of MongoDB, I have made a small modification in the code to try to correct it: https://github.com/phalcon/incubator/pull/868

At the moment I am using it in my development and it works correctly, I wanted to know if it would seem good to include it in the incubator

do you think it is correct?

Thanks

Pull to 3.4 branch and write tests to speed up the integration

Write in issues a NFR to get acceptance and opinions about the change

Rgds