Qtile

* features
- add wmii layout
- add BSD support to graph widgets
* bugfixes
- fix (some) fullscreen problems
- update google calendar widget to latest google api
- improve multiple keyboard layout support
- fix displaying Systray widget on secondary monitor
- fix spawn file descriptor handling in Python 3
- remove duplicate assert code in test_verticaltile.py
- allow padding_{x,y} and margin_{x,y} widget attrs to be set to 0

* features
- add qtile-top memory monitoring
- GroupBox can set visible groups
- new GroupBox highlighting, line
- allow window state to be hidden on WindowName widget
- cmd_togroup can move to current group when None sent
- added MOC playback widget
- added memory usage widget
- log truncation, max log size, and number of log backups configurable
- add a command to change to specific layout index
(lazy.to_layout_index(index))
* bugfixes
- fixed memory leak in dgroups
- margin fixes for MonalTall layout
- improved cursor warp
- remove deprecated imp for Python >= 3.3
- properly close file for NetGraph
- fix MondadTall layout grow/shrink secondary panes for Python 2
- Clock widget uses datetime.now() rather than .fromtimestamp()
- fix Python 3 compatibility of ThermalSensor widget
- various Systray fixes, including implementing XEMBED protocol
- print exception to log during loading config
- fixed xmonad layout margins between main and secondary panes
- clear last window name from group widgets when closed
- add toggleable window border to single xmonad layout
* config breakage
- layouts.VerticalTile `windows` is now `clients`
- layouts.VerticalTile focus_next/focus_previous now take a single
argument, similar to other layouts

This release fixes a problem that made the PyPI package uninstallable,
qtile will work with a pip install now

!!! Config breakage !!!
- various deprecated commands have been removed:
Screen.cmd_nextgroup: use cmd_next_group
Screen.cmd_prevgroup: use cmd_prev_group
Qtile.cmd_nextlayout: use cmd_next_layout
Qtile.cmd_prevlayout: use cmd_prev_layout
Qtile.cmd_to_next_screen: use cmd_next_screen
Qtile.cmd_to_prev_screen: use cmd_prev_screen
- Clock widget: remove fmt kwarg, use format kwarg
- GmailChecker widget: remove settings parameter
- Maildir widget: remove maildirPath, subFolders, and separator kwargs
* Dependency updates
- cffi>=1.1 is now required, along with xcffib>=0.3 and cairocffi>=0.7
(the cffi 1.0 compatible versions of each)
- Care must be taken that xcffib is installed *before* cairocffi
* features
- add support for themed cursors using xcb-cursor if available
- add CheckUpdate widget, for checking package updates, this deprecates
the Pacman widget
- add KeyboardKbdd widget, for changing keyboard layouts
- add Cmus widget, for showing song playing in cmus
- add Wallpaper widget, for showing and cycling wallpaper
- add EzConfig classes allowing shortcuts to define key bindings
- allow GroupBox urgent highlighting through text
- Bar can be placed vertically on sides of screens (widgets must be
adapted for vertical viewing)
- add recognizing brightness keys
* bugfixes
- deprecation warnings were not printing to logs, this has been fixed
- fix calculation of y property of Gap
- fix focus after closing floating windows and floating windows
- fix various Python 3 related int/float problems
- remember screen focus across restarts
- handle length 1 list passed to Drawer.set_source_rgb without raising
divide by zero error
- properly close files opened in Graph widget
- handle _NET_WM_STATE_DEMANDS_ATTENTION as setting urgency
- fix get_wm_transient_for, request WINDOW, not ATOM

This is primarily a unicode bugfix release for 0.9.0; there were several
nits related to the python2/3 unicode conversion that were simply wrong.
This release also adds license headers to each file, which is necessary for
distro maintainers to package Qtile.
* bugfixes
- fix python2's importing of gobject
- fix unicode handling in several places

* !!! Dependency Changes !!!
New dependencies will need to be installed for Qtile to work
- drop xpyb for xcffib (XCB bindings)
- drop py2cairo for cairocffi (Cairo bindings)
- drop PyGTK for asyncio (event loop, pangocairo bindings managed
internally)
- Qtile still depends on gobject if you want to use anything that uses
dbus (e.g. the mpris widgets or the libnotify widget)
* features
- add Python 3 and pypy support (made possible by dependency changes)
- new layout for vertical monitors
- add startup_once hook, which is called exactly once per session (i.e.
it is not called when qtile is restarted via lazy.restart()). This
eliminates the need for the execute_once() function found in lots of
user configs.
- add a command for showing/hiding the bar (lazy.hide_show_bar())
- warn when a widget's dependencies cannot be imported
- make qtile.log more useful via better warnings in general, including
deprecation and various other warnings that were previously
nonexistent
- new text-polling widget super classes, which enable easy
implementation of various widgets that need to poll things outside
the event loop.
- add man pages
- large documentation update, widget/layout documentation is now
autogenerated from the docstrings
- new ImapWidget for checking imap mailboxes
* bugfixes
- change default wmname to "LG3D" (this prevents some java apps from
not working out of the box)
- all code passes flake8
- default log level is now WARNING
- all widgets now use our config framework
- windows with the "About" role float by default
- got rid of a bunch of unnecessary bare except: clauses