Updated khal to 0.9.1.

0.9.1
=====
released 2017-01-25

* FIX detecting not understood timezone information failed on python 3.6, this may lead to
  erroneous offsets in start and end times for those events, as those datetimes
  were treated as if they were in the system's local time, not as if they are in
  the (possibly) configured default_timezone.

* python 3.6 is now officially supported

0.9.0
=====
released 2017-01-24

Dependency Changes
------------------
* vdirsyncer isn't a hard dependency any more

Bug Fixes
---------
* fixed various bugs in `configure`
* fix bug in `new` that surfaces when date(time)format does contain a year
* fix bug in `import` that allows importing into read-only and/or non-default calendar
* fix how color discovered in calendars

Backwards Incompatibilities
---------------------------
* calendar path is now a glob without recursion for discover, if your calendars
  are no longer found, please consult the documentation (Taylor Money)
* `at` command now works like `list` with a timedelta of `0m`, this means that
  `at` will no longer print events that end at exactly the time asked for
  (Taylor Money)
* renamed `agenda` to `list` (Taylor Money)
* removed `days` configuration option in favor of `timedelta`, see
  documentation for details (Taylor Money)
* configuration file path $XDG_CONFIG_HOME/khal/config is now supported and
  $XDG_CONFIG_HOME/khal/khal.conf deprecated
* ikhal: introduction of three different new frame styles, new allowed values for
  `[view] frame` are `False`, `width`, `color`, `top` (with default `False`),
  `True` isn't allowed any more, please provide feedback over the usual channels
  if and which of those you consider useful as some of those might be removed in
  future releases (Christian Geier)
* removed configuration variable `encoding` (in section [locale]), the correct
  locale should now be figured out automatically (Markus Unterwaditzer)
* events that start and end at the same time are now displayed as if their
  duration was one hour instead of one day (Guilhem Saurel)

Enhancements
------------
* (nearly) all commands allow formatting of how events are printed with
  `--format`, also see the new configuration options `event_format`,
  `agenda_event_format`, `agenda_day_format` (Taylor Money)
* support for categories (and add `-g` flag for `khal new`) (Pierre David)
* search results are now sorted by start date (Taylor Money)
* added command `edit`, which also allows deletion of events (Taylor Money)
* `new` has interactive option (Taylor Money)
* `import` can now import multiple files at once (Christian Geier)

ikhal
-----
* BUGFIX no more crashing if invalid date is entered and mini-calendar displayed
* make keybinding for quitting configurable, defaults to *q* and *Q*, escape
  only backtracks to last pane but doesn't exit khal anymore (Christian Geier)
* default keybinding changed: `tab` no longer shows details of focused events
  and does not open the event editor either (Christian Geier)
* right column changed, it will now show as many days/events as fit, if users move
  to another date (while the event column is in focus), that date should be
  highlighted in the calendar (Christian Geier)
* cursor indicates which element is selected


(wiz)