Fade in when scrolling past the editor area (and when the mouse ends up outside of it).
Do the previous commit a bit simpler. :)
Fade in when tabbing out of the editor area. See #7.
Fade in slug area when somthing in it receives focus. Fixes #7.
The reason it was not working in iOS was that the margin becomes 0 when the content reaches the width of the wrap, of course. Fixes #6.
Only fade in when the focus moves to an element outside the editor area. Don't try to do this by detecting tab/shift press as it won't work in some cases. E.g. the list plugin uses the tab key to create nested lists, embedded YouTube videos catch the focus...