Log Message:
Update khal to 0.7.0:

0.7.0
=====
released on 2015-11-24

There are no new or dropped dependencies.

* most of the internal representation of events was rewritten, the current
  benefit is that floating events are properly represented now, hopefully more
  is to come (Christian Geier)
* `printformats` uses a more sensible date now (John Shea)
* khal and ikhal can now highlight dates with events, at the moment, enabling it
  does noticably slow down (i)khal's start; set *[default] highlight_event_days
  = True* and see section *[highlight_days]* for further configuration (Dominik
  Joe Pantůček)
* fixed line wrapping for `at` (Thomas Schape)
* `calendar` and `agenda` optionally print location and description of all
  events, enable with the new --full/-f flag (Thomas Schaper)
* updated and improved zsh completion file (Oliver Kiddle)
* FIX: deleting events did not always work if an event with the same filename existed
  in an other calendar (but no data lost incurred) (Christian Geier)

ikhal
-----
* events are now displayed nicer (Thomas Glanzmann)
* support for colorschemes, a *light* and *dark* one are currently included,
  help is wanted to make them prettier and more functional (config option
  *[view] theme: (dark|light)*) (Christian Geier)
* ikhal can now display frames around some user interface elements, making it
  nicer to look at in some eyes (config option *[view] frame: True*) (Christian
  Geier)
* events can now be duplicated (default keybinding: *p*) (Christian Geier)
* events created while time ranges are selected (default keybinding to enable \ 
date range
  selection: *v*) will default to that date range (Christian Geier)
* when trying to delete recurring events, users are now asked if they want to
  delete the complete event or just this instance (Christian Geier)