* Require phpunit v6.5 and PHP v7

* Update tests to use TestCase

* Fix ClientTest tests

* Updated tests for phpunit v6.5

* Updated assertSame and removed copyright info from tests

* Fixed CS

* Removed php 5.6 from travis tests

* Added php 7.2 to travis

* Removed commented code

* Updated Readme

* Updated CHANGELOG

* Updated CS

* Updated tests and phpunit.dist{,.travis} (bootstrap.php is not needed anymore)

* Updated tests, removed unused coverage