Squashed commit of the following:

Issue 7
M-S-Backspace now forward deletes a word.

commit 558fe0b7e50a791be5935602c6f0538f070bd6c8
Author: Jon Higgs <jhiggs@eml.cc>
Date:   Wed Jul 30 17:30:23 2014 +0200

    fixes.

commit f690d4f3ba7a0316e97073df2137db4de20a8ef1
Author: Jon Higgs <jhiggs@eml.cc>
Date:   Wed Jul 30 17:24:12 2014 +0200

    M-S-Backspace to forward delete word.