shoes/shoes4 — pull request #26 by alindeman (2012-05-28 19:28:24+00:00)
Title: Improves pluggability of the logging mechanism

* No longer depends on `require "java"` unless
`Shoes.configuration.logger = :log4j` is selected.
* Ruby's stdlib `Logger` is now default as it will always be available
under all implementations.
* Finishes #20

I made a few design decisions on my own; if something needs to be changed, let me know.