The Mongo DB backend was migrated to the official driver https://github.com/mongodb/mongo-go-driver.
Fixed Mongo DB auth issue.
Added auth tests for Mongo DB and Redis.

Options to log to stderr, stdout and a file are now available.

This release adds Go modules support.

Mysql now supports a unix socket connection properly.

File patterns had a typo on the check that was introduced when adding mosquitto 1.5.x support. It's now been fixed.

This release stabilizes support for mosquitto's latest versions. Check the readme for instructions on building for 1.5.X and 1.4.X.