Update WP_Logging.php

Allows users to change the arguments for the post type without changing the core library.
Use an earlier hook in the constructor

The idea behind a low (negative) priority is to make sure you get in befor any other code tries to use this functionality.  That seems like a good use for a hook earlier than init to me.

'plugins_loaded' is a good place to count on this code being loaded before others try to use it.
Always align operators with spaces

Mixing tabs inline means stuff ends up misaligned in editors with different tab widths.

The same should probably be done with doc blocks, but it's less clear how you prefer to have those aligned.
Merge pull request #2 from curtismchale/patch-1

Update WP_Logging.php
Merge pull request #4 from evansolomon/earlier-constructor-hook

Use an earlier hook in the constructor
Merge pull request #5 from evansolomon/align-with-spaces

Always align operators with spaces
Removed trailing whitespace. Closes #6