Log Message:
Updated py-vobject to 0.9.4.

0.9.4

    improved PEP8 compliance (#53)
    improved Python 3 compatibility (#55)
    improved encoding/decoding (#49, #58) - thanks @pbiering!
    correct handling of pytz timezones (#45) - thanks @Achimh3011!

0.9.3

    Fixed use of doc in setup.py for -OO mode (#19) - thanks @dsanders11!
    Added python3 compatibility for base64 encoding (#21) - thanks @prauscher!
    Fixed ORG fields with multiple components (#23) - thanks @untitaker!
    Removed stray HTML entity in README (#26) - thanks @inglesp!
    Updated README.md to show example of adding "ORG" to a vCard (#28) \ 
- thanks @Tamerz!
    Handle pytz timezones in iCalendar serialization (#33) - thanks @medmunds!
    Use logging instead of printing to stdout (#35) - thanks @lucc!