Improve logging

[neophob]

In my PR @freezy add a comment:

I usually try to prefix logs with where it occurs: [Myclass.myMethod]: My message

Make sense - why not improve the whole logger, some ideas:

• create a instance with its class name as prefix
• use debug - dynamic enable debug logging for certain classes might help
• future improvements, when public - send error logs to log aggregator to get realtime feedback

[neophob]

Potentail cloud log aggregator:

• https://aws.amazon.com/elasticsearch-service/ - guess its too complex for our use case
• https://www.loggly.com/plans-and-pricing/ lite is free up to 200mb per day, used that service in the past
• https://www.fluentd.org/ - could not find a service provider for this

[neophob]

Next pragmatic step:

• use debug - enables dynamic change of log level or depending on package (browser & node)
• will too a PoC