Fixes #743 for version 3.x

importing DateTime and DateTimeZone from the global namespace

Applied fixes from StyleCI

Fixed logQuery to display ObjectID in parameters

Applied fixes from StyleCI

Moved phpunit.xml to phpunit.xml.dist

Update README.md

Update README.md

Fix typo in README

Update DatabaseTokenRepository.php

Fixed DateTime namespace not being fully qualified

fix #798

update MongoQueue.php

Some fixes to delete successfully processed jobs on queues.

Add missing phpdoc for $processor

Pass credentials as parameters

As per https://github.com/laravel/framework/commit/83316753bbae495cc2…

- If no user was given an empy user was set resulting in an error

- Reverted the config changes
- The credentials are now added to the MongoDB constructor if they are not already present
- Also fixed failing test by changing method access level