use platform end of line for lineformatter about monolog

[Seldaek]

I'm really not sure whether this would be a good thing. This would make the log files platform dependent, which isn't great. In theory most apps should handle all line endings equally well, but in practice this is not the case, so I would say having a unique format across all platform as the default is better. Anyway this is indeed the default, and you are free to use a custom format in your application if you'd rather have different line endings.

Anyway, I wonder what issues you experienced on windows? If it's about opening log files with notepad, I would highly suggest you install Notepad2 - if you pick the "Setup" version it will replace windows' default Notepad by this one which is really superior in all ways.