it seems like the panel will hook into this by the window message
rename Elm.Debugger -> exposedDebugger
rename Elm.debug -> Elm.fullscreenDebugHooks
no need to post to the window since no one should be listening anymore
moved debuggerAttach inside the fullscreenDebugHooks function
Merge pull request #746 from michaelbjames/refactor/debugFullscreen

Refactor/debug fullscreen