Add PSR-3 logger interfaces/classes
Add psr3 lib to the composer.json for tests
Add loggerchannel/loggerchannelfactory
add unit tests for loggers
add the logger channel factory interface from d8
fix the WatchdogLogger
register the loggers in the container
Add some simple integration test for the channel logger
expand the test coverage to use the logger channel directly
the logger factory is not container aware
improve test coverage
get back to 100% test coverage
replace some of the custom code in LoggerChannel with the core code
Provide test coverage for setRequestStack and setCurrentUser
Remove unneeded files.
don't extend from the core class but at least use a base class to reduce the boilerplate
fix composer.lock hash value
Merge pull request #13 from dawehner/log

Integrate the logging framework