SentryHandler should be created without a raven instance
SentryAppender should be created without a raven instance
SentryAppender should be created without a raven instance
SentryAppender should be created without a raven instance
Make the depednency to servlet-api optional
Ensure that the sentry-stub is always available
Add plugins to start sentry-stub during IT
Do not start sentry-stub while building sentry-stub
Enable Integration Tests for log4j
Upgrade surefire-report version