Propagated a logrus.Logger/Entry along for the processor, registry and
providers to use for events that may not require to stop processing but
are useful to know otherwise.
Changed some functions to return errors instead of failing with a logger
trying to centralice the logging or returning of the main failing points
in the main components of the application.
Closes#13
* Using EXIF data for screenshots which is more accurate and doesn't
require parsing the filename (which not always contains the date)
* Relying on the date parsing for videos for now since I haven't found
a game that didn't have the datetime on the video filename. This could
change in the future.
On windows filesystems no special characters can be used on path routes,
so when we fail to create (MkdirAll) the path for a certain
game and a failure happens, we use a slugified version of the name
instead.
Felipe Martin Garcia