release notes for 0.9.1

doc/source/news.rst

@@ -12,6 +12,7 @@ available as an `rss feed <https://lostpackets.de/khal/index.rss>`_ |rss|.
     :title: khal news
     :link: http://lostpackets.de/khal/
 
+    news/khal091
     news/khal09
     news/khal071
     news/khal084

doc/source/news/khal091.rst

@@ -0,0 +1,29 @@
+khal v0.9.1 released
+====================
+
+.. feed-entry::
+        :date: 2017-01-25
+
+This is a bug fix release for python 3.6.
+
+Under python 3.6, datetimes with timezone information that is missing from the
+icalendar file would be treated if they were in the system's local timezone, not
+as if they were in khal's configured default timezone. This could therefore lead
+to erroneous offsets in start and end times for those events. 
+
+To check if you are affected by this bug, delete khal's database file (usually
+:file:`~/.local/share/khal/khal.db`), rerun khal and watch for error messages
+that look like the one below:
+
+   warning: DTSTART localized in invalid or incomprehensible timezone `FOO` in
+   events/event_dt_local_missing_tz.ics. This could lead to this event being
+   wrongly displayed.
+
+
+All users (of python 3.6) are advised to upgrade as soon as possible.
+
+Get `khal v0.9.1`__ from this site, or from pypi_.
+
+__ https://lostpackets.de/khal/downloads/khal-0.9.1.tar.gz
+
+.. _pypi: https://pypi.python.org/pypi/khal/