Log Message:
Updated khal to 0.9.2.

0.9.2
=====
released 2017-02-13

* FIX if weekstart != 0 ikhal would show wrong weekday names
* FIX allday events added with `khal new DATE TIMEDELTA` (e.g., 2017-01-18 3d)
  were lasting one day too long
* FIX no more crashes when using timezones that have a constant UTC offset (like
  UTC itself)
* FIX updated outdated zsh completion file
* FIX display search results for events with neither DTEND nor DURATION
* FIX display search results that are all-day events
* in ikhal, update the date-titles on date change
* FIX printing a new event's path if [default] print_new = path
* FIX width of calendar in `khal calendar` was off by two if locale.weeknumbers
  was set to "right"

* CHANGED default `agenda_day_format` to include the actual date of the day

* NEW configuration option: [view]dynamic_days = True, if set to False, ikhal's
  right column behaves similar as it did in 0.8.x