From composer.json: `"sentry/sentry": "^0.13"`
Latest 0.x `sentry/sentry`: 0.22.0
sentry/sentry 0.16.0 changed the function signature of Raven_Client::capture():
0.16.0: `public function capture($data, $stack = null, $vars = null)`
0.15.0: `public function capture($data, $stack, $vars = null)`
While the test suite silently passes with PHP < 7.1, running the test suite with
PHP 7.1 fails with the following error:
`Declaration of Monolog\Handler\MockRavenClient::capture($data, $stack, $vars = NULL)
should be compatible with Raven_Client::capture($data, $stack = NULL, $vars = NULL)`
