Added support for multiple monitors
Fix 'send_to_monitor'
Fix toggle_fullscreen
Fix monocle
New message: 'add_in' ; handle multiple names
New messages: 'nearest' and 'alternate_focus'
New setting: 'focus_follow_mouse'
Fix typo in setting name
Only follow the mouse pointer if it moves
Merge branch 'develop'
New setting: 'button_modifier'
Fix wrong assumption regarding window id
Options for 'cycle_desktop': --skip-{free,occupied}
Cosmetic changes
Handle monitors in 'enter_notify'
Window resize/move toggles the floating state of tiled windows
Properly handle 'focus_follows_mouse'
Fix the handling of 'button_modifier'
Added a 'Contributors' section
Remove obsolete zombie handler