Removed underlying categories of options, merging all into one object, changed options to _options, made Console.debug Console._ and its first argument is the method you want to execute on the console, added getOption() and setOption() methods and utilized them throughout the code, moved some things around, added a new console.trace() stack trace and an option to use the old one (useOldStackTrace), added shortcut methods for general console methods (I used the ones provided via Firebug in Firefox), and added more comments.
Changed version number.
Updated for 1.5.
Added a little spacing.