Avoid X- lines which cause tz.tzical() to fail.
Avoid X- lines which cause tz.tzical() to fail.

Google Calendar will sometimes add a entry like
"X-LIC-LOCATION:Australia/Sydney" which tz.tzical() cannot handle (or
at leat not the version in Jessie). Instead of not working at all on
files with those type of lines, just print them at the end of the
rendered output.

sebastianw/icalview