This is a convenience module in order to have less import noise. It
re-exports the following:
a) Commonly used modules in full (Data.Foldable, Data.Applicative, and
so on); though only those that play nicely with each other, so that
XMonad.Prelude can be imported unqualified without any problems.
This prevents things like `Prelude.(.)` and `Control.Category.(.)`
fighting with each other.
b) Helper functions that don't necessarily fit in any other module;
e.g., the often used abbreviation `fi = fromIntegral`.
This makes UpdatePointer more Xinerama-compatible: If the user switches to a
screen with an empty workspace, the pointer is moved to that workspace, which I
think is expected behavoiur.
This patch depends on the following xmonad core patch:
Remember if focus changes were caused by mouse actions or by key commands
If the user was moving the mouse, it's not appropriate to move the pointer
around in resonse to focus changes. Do that only in response to keyboard
commands.
