Add v2 api support (#15)

* Return response from put request

* Create warrant object module

* Add batch create/delete object methods

* Update query method to use v2 endpoint

* Update resource classes to use object methods

* fixup object module

* Update warrant class to use v2 endpoint and add batch methods

* Use /v2/check instead of /v2/authorize

* Create session object for requests

* Add options param to support warrant token

* Add batch check method

* Return warrant token if returned in header

* Add typing and unit tests

* Fix lint errors

* Parse warrant and subject objects from query result

* Address PR comments

Author: stanleyphu