Add a raw formatter which returns the data hash without any further processing
Remove action pack from gemfile as it is part of the gemspec
Set logger for ActiveSupport base class

As log rage does not set the logger itself, it should be safe to rely on rails setting it on the parent
Loosen gem spec requirements to make it compatible with rails 4
Move formatting logic to classes

* All log formatting logic is not encapsulated in classes
* Formatters have their own specific specs
* Formatting can be changed by providing a config object which responds to #call(data)
* Added legacy support and deprecation warnings
Re-added action_pack to test environment
Ensure rails4 compatibility

* require active support concern
* add railties dependency
Update README
Remove debugger development dependency
Merge pull request #43 from railslove/master

Refactor log formatting into classes