Make logger implementation compatible with new logging infrastructure.

[jonnydee]

Fixes #20

Changes

The logging infrastructure has been refactored with breaking changes in order to allow for logging performance optimizations. However, this project has not yet been refactored accordingly.

The changes in this PR just make sure logging works again but does not have any additional performance optimizations included.

Checklist

For significant changes, please ensure that the following have been completed (delete if not relevant):

• [x] This change follows the Akka.NET API Compatibility Guidelines.
• [x] This change follows the Akka.NET Wire Compatibility Guidelines.
• [x] I have reviewed my own pull request.
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed, if any.
• [ ] I have added website documentation for this feature.

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This PR's Benchmarks

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