Merge branch 'master' into 31-independents-mouse-focus

make XWayland support optional

#31 independents retain focus while mouse is over them

#31 independents retain focus while mouse is over them

#31 independents retain focus while mouse is over them

#31 independents retain focus while mouse is over them

fix killclient binding, add helpful comment

add monocle layout

condense getatom and add note about error return

Merge branch 'master' of github:djpohly/dwl into master

Merge pull request #25 from geistesk/error-maybe-uninitialized

getatom: fix potential uninitialized atom variable

add some more hands-off protocols

fix an editing mistake

focusclient checks whether oldsel == sel

No need to do it outside the call.

refactor focusclient

abc

convert lastfocused() to focustop(m)

pass previous focus to focusclient

remove surface from focusclient function

Honestly not sure why a specific surface is focused rather than the
client figuring that out.  Seems to work in a quick test, but we can
remember this commit if something breaks for, I dunno, mouse people.

C99 doesn't support anonymous unions

I'm cool with ->surface.xdg instead of ->xdg_surface though.