Logging from alternate thread fails when console is open

[jasonrclark]

Because the logger writes straight to UI elements when the console is open, it will fail with loud thread access errors.

Run this, click the button to open the console and just wait:

Shoes.app do
  Thread.new do
    while true
      Shoes.logger.error("boo")
      sleep 5
    end
  end

  button "console yourself" do
    Shoes.console.show
  end
end