Ability to access logger instances in the global scope via static calls
unregisterLogger() method added, phpdoc typo
Filled second argument for __callStatic()
Moved all the logic to the separated class - Monolog\Registry
phpdoc typo
removed unnecessary presetting index to null
Removed addToRegistry() method
Fixed outdated phpdoc
Merge remote-tracking branch 'tatarko/master'
Merge removeLogger* methods in a simpler one, refs #273
Fix CS