Qtile

* bug fix
- fixed pip install of qtile

!!! Completely changed extension configuration, see the documentation !!!
!!! `extention` subpackage renamed to `extension` !!!
!!! `extentions` configuration variable changed to `extension_defaults` !!!
* features
- qshell improvements
- new MonadWide layout
- new Bsp layout
- new pomodoro widget
- new stock ticker widget
- new `client_name_updated` hook
- new RunCommand and J4DmenuDesktop extension
- task list expands to fill space, configurable via `spacing` parameter
- add group.focus_by_name() and group.info_by_name()
- add disk usage ratio to df widget
- allow displayed group name to differ from group name
- enable custom TaskList icon size
- add qcmd and dqcmd to extend functionality around qtile.command
functionality
- add ScratchPad group that has configurable drop downs
* bugfixes
- fix race condition in Window.fullscreen
- fix for string formatting in qtile_top
- fix unicode literal in tasklist
- move mpris2 initialization out of constructor
- fix wlan widget variable naming and division
- normalize behavior of layouts on various commands
- add better fallback to default config
- update btc widget to use coinbase
- fix cursor warp when using default layout implementation
- don't crash when using widget with unmet dependencies
- fix floating window default location

* features
- new MPD widget, widget.MPD2, based on `mpd2` library
- add option to ignore duplicates in prompt widget
- add additional margin options to GroupBox widget
- add option to ignore mouse wheel to GroupBox widget
- add `watts` formatting string option to Battery widgets
- add volume commands to Volume widget
- add Window.focus command
* bugfixes
- place transient windows in the middle of their parents
- fix TreeTab layout
- fix CurrentLayoutIcon in Python 3
- fix xcb handling for xcffib 0.5.0
- fix bug in Screen.resize
- fix Qtile.display_kb command

!!! qsh renamed to qshell !!!
This avoids name collision with other packages
* features
- Test framework changed to pytest
- Add `startup_complete` hook
* bugfixes
- Restore dynamic groups on restart
- Correct placement of transient_for windows
- Major bug fixes with floating window handling
* file path changes (XDG Base Directory specification)
- the default log file path changed from ~/.qtile.log to
~/.local/share/qtile/qtile.log
- the cache directory changed from ~/.cache to ~/.cache/qtile
- the prompt widget's history file changed from ~/.qtile_history to
~/.cache/qtile/prompt_history

!!! Python 3.2 support dropped !!!
!!! GoogleCalendar widget dropped for KhalCalendar widget !!!
!!! qtile-session script removed in favor of qtile script !!!
* features
- new Columns layout, composed of dynamic and configurable columns of
windows
- new iPython kernel for qsh, called iqsh, see docs for installing
- new qsh command `display_kb` to show current key binding
- add json interface to IPC server
- add commands for resizing MonadTall main panel
- wlan widget shows when you are disconnected and uses a configurable
format
* bugfixes
- fix path handling in PromptWidget
- fix KeyboardLayout widget cycling keyboard
- properly guard against setting screen to too large screen index

!!! Config breakage !!!
- positional arguments to Slice layout removed, now `side` and `width`
must be passed in as keyword arguments
* features
- add alt coin support to BitcoinTracker widget
* bugfixes
- don't use six.moves assignment (fix for >=setuptools-19.3)
- improved floating and fullscreen handling
- support empty or non-charging secondary battery in BatteryWidget
- fix GoogleCalendar widget crash