v2.0.0
------

  * Remove support for PowerTrack v1 since this version was sunset in early
    January 2017

v1.3.1
------

  * Add the PowerTrack::Stream.v2? instance method

v1.3.0
------

  * Support Replay v2
  * Support specificities of rules v2 in PowerTrack::Rule class

v1.2.0
------

  * Support PowerTrack v2
    - Rule validator and Replay v2 not supported yet

v1.1.1
------

  * Support retries in Replay mode

v1.1.0
------

  * Add support for Replay feature

v1.0.3
------

  * Retrieve the on_system function from options

v1.0.2
------

  * to_json can get options in order for powertrack to support the standard
    JSON library (through the MultiJson gem). Thanks to @duncanita for the PR.