Create me a plugin to supply logging facilities for WordPress development. It should be possible to call a function from any PHP code in WordPress to write a logging message out to a specified log file location. The function should, if possible, include the location the call was made from without the requirement to explicitly pass the function name. There should be a configuration screen that specified whether logging is enabled or disabled, and the location of the log file, and the log file name. Default location should be in a folder in the wp-content/uploads folder. It should also have the option to prefix the filename with the current date in YYYYMMDD format.